Story highlights Five Israeli soldiers killed in militant tunnel attack, IDF says

The death toll in Gaza rises above 1,100, Palestinian health official says

Netanyahu tells nation to prepare for "protracted campaign" in Gaza

At least eight children killed at Gaza refugee camp, Gaza's Health Ministry says

Despite calls for a new cease-fire, fighting intensified in Gaza on Monday and Tuesday morning, with Palestinians saying more than two dozen people died as rockets or mortars struck a refugee camp, a hospital and the center of Gaza City.

Eighteen people died as powerful and continuous air strikes rained down on Gaza City early Tuesday morning, the Palestinian Health Authority reported. And the Israeli military reported that 10 of its soldiers were killed Monday.

Al Aqsa TV reported that Israeli strikes hit the Ministry of Finance in western Gaza and the house of Ismail Haniyeh, a senior political leader of Hamas. A radio station run by Hamas was bombed.

Ten people, including eight children, were killed Monday when shells hit a refugee camp near the beach in Gaza where parents went to celebrate Eid al-Fitr, a Muslim holiday that marks the end of the holy month of Ramadan, the Gaza Health Ministry said.

The children were playing in the street near their homes when an explosion shook the ground. Holes as large as fists pockmarked a nearby building, and 10 people -- eight of them children -- were killed, according to Gaza's Health Ministry.

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In the chaos, they were rushed to nearby Shifa Hospital. A TV news outlet run by Hamas showed live footage of the hospital. The channel blamed the carnage on an Israeli drone.

Shifa Hospital had been hit, too. Two people there were injured, the ministry said.

As before, Israel and Hamas accused each other of sending the bombs that killed people in Gaza. A short time later, Israel sent a text message to the media blaming Gaza "terrorists" for the attacks.

"In the blink of an eye," a father said, "I found body parts and heads cut off, no arms, no legs. I started to collect limbs, heads I couldn't recognize, I couldn't recognize my own children."

Though world leaders pleaded for a humanitarian cease-fire, Israeli Prime Minister Benjamin Netanyahu sent a message on Israeli television Monday.

"We need to be prepared for a protracted campaign in Gaza," he said.

Calling life under the threat of death "inconceivable" for Israel, Netanyahu said the military will not end its incursion into Gaza until it has destroyed tunnels Hamas is using to attack civilians outside Gaza.

Defense Minister Moshe Yaalon said Israel will not negotiate while Hamas is still attacking. "We will not hesitate to expand our operation," he said.

Deaths in Israel, too

Ten Israeli soldiers were killed Monday, according to the Israel Defense Forces.

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Five were killed fighting militants who tried to attack Israeli civilians using a tunnel shaft leading to the Nahal Oz community, the IDF said. Israeli soldiers stopped the attempted attack, killing one of the attackers, the military said.

One Israeli soldier died in combat in southern Gaza. And another four were killed and eight were injured by mortar fire near Beeri, close to the Israeli-Gaza border, the IDF said.

Ashraf al-Qudra, spokesman for Gaza health ministry, said 1,101 people have been killed and more than 6,500 wounded in Gaza since the current conflict began. A total of 53 Israeli soldiers have died.

The tunnels

A central goal of Israel's military is to destroy tunnels that Hamas uses to smuggle weapons and launch attacks.

CNN's "New Day" asked chief Palestinian negotiator Saeb Erakat what the purpose of the tunnels were.

"I know the situation is so much complex -- I'm not saying I know the picture as a whole," he responded. But, he said, Gaza is now like a burning building. "We need to get the people out, and then we need to extinguish the fire, and then we sit down and talk."

Erakat called for Israel to pull troops out of Gaza.

Israel isn't acting in self-defense, he said. "They're the occupying power. They should be responsible for the human lives there."

Erakat said U.N. figures show "90% of those killed are women and children."

It was unclear what he was basing those figures on. The United Nations estimates that more than 70% of the Palestinians killed were civilians, including 226 youths and 117 women. More than 150 were members of armed groups, the United Nations says.

UNICEF said Monday that about two-thirds of the children killed were 12 or younger.

Israel blames Hamas for civilian deaths, saying militants encourage people to stay in their homes despite Israeli warnings that strikes are coming. Militants also use civilian facilities such as homes, schools, mosques and hospitals to launch attacks on Israeli civilians and store weapons.

Calls, hopes for peace

The Gaza crisis was discussed Monday in a joint call involving U.S. President Barack Obama. British Prime Minister David Cameron, German Chancellor Angela Merkel, French President Francois Hollande and Italian Prime Minister Matteo Renzi.

A statement from Cameron's office said the leaders agreed on "the urgent need for a lasting ceasefire in Gaza and Israel, backing the efforts of the Egyptian government to achieve this."

U.S. Secretary of State John Kerry returned to Washington after a trip to the Middle East and Paris, where he held discussions in an attempt to calm the violence. His efforts were criticized by Israeli media and Palestinian leaders.

A spokesman for U.N. Secretary-General Ban Ki-moon said Monday night that he was concerned the IDF had dropped leaflets in the northern Gaza Strip, warning thousands of residents to leave their homes and evacuate to Gaza City. If true, this would have a "devastating humanitarian impact" on Gaza residents, he said.

At a midnight meeting, the U.N. Security Council proclaimed its support for "a comprehensive peace based on the vision of a region where two democratic states, Israel and Palestine, live side by side in peace with secure and recognized borders as envisioned in Security Council resolution 1850 (2008) ."

That fell short of Palestinian Ambassador Riyad Mansour's desires. He wanted the body to pass a resolution calling for the withdrawal of Israeli forces from Gaza.

"The equation is simple," Israeli Ambassador Ron Prosor said. "When it is quiet in Israel, it will be quiet in Gaza."

Obama had another phone conversation with Netanyahu on Sunday, reiterating concern about the rising Palestinian civilian deaths, Israeli deaths and the "worsening humanitarian situation in Gaza."

Photos: Photos: Israel-Gaza crisis Photos: Photos: Israel-Gaza crisis Israel-Gaza crisis – Palestinians in Gaza celebrate a ceasefire between Israel and Hamas on Tuesday, August 26. After more than seven weeks of heavy fighting, Israel and Hamas agreed to an open-ended ceasefire that puts off dealing with core long-term issues. Hide Caption 1 of 73 Photos: Photos: Israel-Gaza crisis Israel-Gaza crisis – Palestinians inspect the damage to a residential building following several late night Israeli airstrikes in Gaza City on August 26. Hide Caption 2 of 73 Photos: Photos: Israel-Gaza crisis Israel-Gaza crisis – Gila, center, mother of 4-year-old Israeli boy Daniel Tragerman, sits next to his grave during his funeral near the Israel-Gaza border on Sunday, August 24. Hide Caption 3 of 73 Photos: Photos: Israel-Gaza crisis Israel-Gaza crisis – Palestinians run away from debris after a bomb from an Israeli airstrike hit a house in Gaza on Saturday, August 23. Hide Caption 4 of 73 Photos: Photos: Israel-Gaza crisis Israel-Gaza crisis – An Israeli soldier smokes a cigarette in a large concrete pipe used as shelter at an army deployment point near the Israeli-Gaza border on Wednesday, August 20. Hide Caption 5 of 73 Photos: Photos: Israel-Gaza crisis Israel-Gaza crisis – Light trails made by rockets fired from the Gaza Strip stand out against the night sky on Tuesday, August 19. Despite efforts to come to a peaceful agreement, Gaza militants launched rockets into Israel on Tuesday, and Israel responded with its own rockets. Hide Caption 6 of 73 Photos: Photos: Israel-Gaza crisis Israel-Gaza crisis – An injured Palestinian man is helped into the Shifa hospital in Gaza City on August 19. Hide Caption 7 of 73 Photos: Photos: Israel-Gaza crisis Israel-Gaza crisis – Police examine the remains of a rocket launched from Gaza that landed near the kibbutz of Yad Mordechay on August 19. Hide Caption 8 of 73 Photos: Photos: Israel-Gaza crisis Israel-Gaza crisis – Smoke rises after an Israeli airstrike on Gaza City on August 19. Hide Caption 9 of 73 Photos: Photos: Israel-Gaza crisis Israel-Gaza crisis – Islam El Masri begins to sort through the rubble of her destroyed home in Beit Hanoun, Gaza, on Thursday, August 14. Hide Caption 10 of 73 Photos: Photos: Israel-Gaza crisis Israel-Gaza crisis – Israelis gather in Tel Aviv during a protest August 14 calling on the government and the army to end Palestinian rocket attacks from Gaza once and for all. Hide Caption 11 of 73 Photos: Photos: Israel-Gaza crisis Israel-Gaza crisis – Smoke rises in Gaza City after an airstrike on Saturday, August 9. Hide Caption 12 of 73 Photos: Photos: Israel-Gaza crisis Israel-Gaza crisis – Israeli soldiers walk past a Merkava tank as they patrol a field near Israel's border with Gaza on August 9. Hide Caption 13 of 73 Photos: Photos: Israel-Gaza crisis Israel-Gaza crisis – A Palestinian boy salvages family belongings from the rubble of a four-story building after an airstrike in Gaza City on Friday, August 8. Hide Caption 14 of 73 Photos: Photos: Israel-Gaza crisis Israel-Gaza crisis – Israelis flee after a rocket fired from Gaza hit the residential neighborhood of Sderot, Israel, on August 8. Hide Caption 15 of 73 Photos: Photos: Israel-Gaza crisis Israel-Gaza crisis – A Palestinian man looks out over destruction in the al-Tufah neighborhood of Gaza City on Wednesday, August 6. Hide Caption 16 of 73 Photos: Photos: Israel-Gaza crisis Israel-Gaza crisis – Displaced Palestinians carry their belongings as they leave a United Nations school in Beit Lahiya, Gaza, to return to their homes Tuesday, August 5. Hide Caption 17 of 73 Photos: Photos: Israel-Gaza crisis Israel-Gaza crisis – The body of Avrohom Wallis is carried during his funeral in Jerusalem on Monday, August 4. Wallis was killed in what Israeli police spokesman Micky Rosenfeld called a "terror attack," when a man drove an earthmover into a bus in Jerusalem. Hide Caption 18 of 73 Photos: Photos: Israel-Gaza crisis Israel-Gaza crisis – Israeli soldiers fire a mortar shell toward Gaza from the Israeli side of the border on August 4. Hide Caption 19 of 73 Photos: Photos: Israel-Gaza crisis Israel-Gaza crisis – Palestinians remove rubble from a house hit by an airstrike in the al-Shati refugee camp in Gaza City on August 4. Hide Caption 20 of 73 Photos: Photos: Israel-Gaza crisis Israel-Gaza crisis – An Israeli drone circles over Gaza City on Sunday, August 3. Hide Caption 21 of 73 Photos: Photos: Israel-Gaza crisis Israel-Gaza crisis – A Palestinian man sits in a hospital in Rafah, Gaza, on August 3. Hide Caption 22 of 73 Photos: Photos: Israel-Gaza crisis Israel-Gaza crisis – An honor guard caries the coffin of Israeli Lt. Hadar Goldin during his funeral in Kfar-saba, Israel, on August 3. Goldin was thought to have been captured during fighting in Gaza but was later declared killed in action by the Israel Defense Forces. Hide Caption 23 of 73 Photos: Photos: Israel-Gaza crisis Israel-Gaza crisis – A Palestinian boy looks for belongings after an airstrike in Rafah on Saturday, August 2. Hide Caption 24 of 73 Photos: Photos: Israel-Gaza crisis Israel-Gaza crisis – Israeli soldiers walk to their tank at a staging area near the border with Gaza on August 2. Hide Caption 25 of 73 Photos: Photos: Israel-Gaza crisis Israel-Gaza crisis – A young Palestinian carries damaged copies of the Quran from the rubble of the Imam Al Shafaey mosque in Gaza City on August 2. Hide Caption 26 of 73 Photos: Photos: Israel-Gaza crisis Israel-Gaza crisis – Palestinians displaced from their houses return to check their homes in Gaza City on Friday, August 1. Hide Caption 27 of 73 Photos: Photos: Israel-Gaza crisis Israel-Gaza crisis – An Israeli soldier carries a shell as he prepares a tank along the Israel-Gaza border on Thursday, July 31. Israel called up 16,000 additional reservists, bolstering forces for its fight against Hamas, the militant group that controls Gaza. Hide Caption 28 of 73 Photos: Photos: Israel-Gaza crisis Israel-Gaza crisis – Smoke rises from a building after an airstrike in Rafah on July 31. Hide Caption 29 of 73 Photos: Photos: Israel-Gaza crisis Israel-Gaza crisis – The parents and a sister of Israeli soldier Guy Algranati mourn during his funeral in Tel Aviv on July 31. Hide Caption 30 of 73 Photos: Photos: Israel-Gaza crisis Israel-Gaza crisis – U.N. workers remove a donkey injured at a U.N.-run school in Gaza on Wednesday, July 30. Hide Caption 31 of 73 Photos: Photos: Israel-Gaza crisis Israel-Gaza crisis – Palestinians walk under the collapsed minaret of a destroyed mosque in Gaza City on July 30. Hide Caption 32 of 73 Photos: Photos: Israel-Gaza crisis Israel-Gaza crisis – Palestinians gather leaflets that fell from an Israeli plane on July 30. The leaflets warned residents of airstrikes in Gaza City. Hide Caption 33 of 73 Photos: Photos: Israel-Gaza crisis Israel-Gaza crisis – Israelis take cover from a Palestinian rocket attack from Gaza during the funeral of Israeli soldier Meidan Maymon Biton, which was held at a cemetery in Netivot, Israel, on Tuesday, July 29. Hide Caption 34 of 73 Photos: Photos: Israel-Gaza crisis Israel-Gaza crisis – Smoke and fire rise above Gaza City after an Israeli airstrike on July 29. Hide Caption 35 of 73 Photos: Photos: Israel-Gaza crisis Israel-Gaza crisis – An Israeli soldier prays on the Israeli side of the border with Gaza on July 29 as smoke billows from the only power plant supplying electricity to Gaza. Hide Caption 36 of 73 Photos: Photos: Israel-Gaza crisis Israel-Gaza crisis – Near the rubble of their home in Rafah, Palestinian men mourn July 29 for people killed during an airstrike. Hide Caption 37 of 73 Photos: Photos: Israel-Gaza crisis Israel-Gaza crisis – A Palestinian man places a portrait of Hamas leader Ismail Haniya on the rubble of Haniya's Gaza City home July 29 after it was hit by an overnight airstrike. Hide Caption 38 of 73 Photos: Photos: Israel-Gaza crisis Israel-Gaza crisis – Flares from Israeli forces light up the night sky of Gaza City on July 29. Hide Caption 39 of 73 Photos: Photos: Israel-Gaza crisis Israel-Gaza crisis – Israeli soldiers carry the coffin of 2nd Lt. Roy Peles, an infantry officer who was killed in combat, during his funeral in Tel Aviv on Sunday, July 27. Hide Caption 40 of 73 Photos: Photos: Israel-Gaza crisis Israel-Gaza crisis – During a 12-hour cease-fire in Gaza City's Shijaiyah neighborhood on Saturday, July 26, a Palestinian man sits atop a car filled with belongings that were salvaged from a destroyed home. Hide Caption 41 of 73 Photos: Photos: Israel-Gaza crisis Israel-Gaza crisis – Israeli soldiers watch a bomb explode along the border with Gaza before the 12-hour cease-fire on July 26. Hide Caption 42 of 73 Photos: Photos: Israel-Gaza crisis Israel-Gaza crisis – As her brother-in-law Mazen Keferna weeps on the ground, Manal Keferna cries upon discovering her family home destroyed by airstrikes in Beit Hanoun on July 26. Hide Caption 43 of 73 Photos: Photos: Israel-Gaza crisis Israel-Gaza crisis – Palestinians dig a body out of the rubble of a destroyed house in Gaza during the cease-fire on July 26. Hide Caption 44 of 73 Photos: Photos: Israel-Gaza crisis Israel-Gaza crisis – An Israeli soldier mourns at the grave of reserve Master Sgt. Yair Ashkenazy during his funeral at the military cemetery in Rehovot, Israel, on Friday, July 25. Ashkenazy was killed during operations in northern Gaza, the Israel Defense Forces reported. Hide Caption 45 of 73 Photos: Photos: Israel-Gaza crisis Israel-Gaza crisis – A Palestinian man cries after bringing a child to the Kamal Adwan hospital in Beit Lahiya on Thursday, July 24. The child was wounded in a strike on a school that was serving as a shelter for families in Gaza. It's unclear who was behind the strike. The Israeli military said it was "reviewing" the incident, telling CNN that a rocket fired from Gaza could have been responsible. Hide Caption 46 of 73 Photos: Photos: Israel-Gaza crisis Israel-Gaza crisis – Israeli soldiers carry a wounded soldier to a helicopter near the Israel-Gaza border on July 24. Hide Caption 47 of 73 Photos: Photos: Israel-Gaza crisis Israel-Gaza crisis – Israeli soldiers patrol the Israel-Gaza border on July 24. Hide Caption 48 of 73 Photos: Photos: Israel-Gaza crisis Israel-Gaza crisis – A trail of blood is seen in the courtyard of the school that was hit July 24 in the Beit Hanoun district of Gaza. Hide Caption 49 of 73 Photos: Photos: Israel-Gaza crisis Israel-Gaza crisis – An Israeli tank fires toward Gaza from a position near Israel's border on July 24. Hide Caption 50 of 73 Photos: Photos: Israel-Gaza crisis Israel-Gaza crisis – A photograph tweeted by astronaut Alexander Gerst on Wednesday, July 23, shows major cities of Israel and Gaza. Gerst said in his tweet: "My saddest photo yet. From #ISS we can actually see explosions and rockets flying over #Gaza & #Israel." Hide Caption 51 of 73 Photos: Photos: Israel-Gaza crisis Israel-Gaza crisis – A woman in Philadelphia passes by a departure board that shows US Airways Flight 796, scheduled to fly to Tel Aviv, has been canceled on Tuesday, July 22. The Federal Aviation Administration told U.S. airlines they were temporarily prohibited from flying to the Tel Aviv airport after a Hamas rocket exploded nearby. Hide Caption 52 of 73 Photos: Photos: Israel-Gaza crisis Israel-Gaza crisis – Smoke and fire from the explosion of an Israeli strike rise over Gaza City on July 22. Hide Caption 53 of 73 Photos: Photos: Israel-Gaza crisis Israel-Gaza crisis – A relative of Israeli soldier Jordan Ben-Simon mourns over his coffin during his funeral in Ashkelon, Israel, on July 22. Hide Caption 54 of 73 Photos: Photos: Israel-Gaza crisis Israel-Gaza crisis – Palestinians inspect destroyed buildings and collect usable items after an Israeli air assault on July 22. Hide Caption 55 of 73 Photos: Photos: Israel-Gaza crisis Israel-Gaza crisis – Israeli soldiers weep at the grave of Israeli Sgt. Adar Barsano during his funeral Sunday, July 20, in Nahariya, Israel. Hide Caption 56 of 73 Photos: Photos: Israel-Gaza crisis Israel-Gaza crisis – Palestinian medics carry a body in Gaza's Shaja'ia district on July 20. Hide Caption 57 of 73 Photos: Photos: Israel-Gaza crisis Israel-Gaza crisis – Israeli soldiers give medical care to soldiers who were wounded during an offensive in Gaza on July 20. Hide Caption 58 of 73 Photos: Photos: Israel-Gaza crisis Israel-Gaza crisis – A Palestinian boy injured during an Israeli airstrike is taken to the hospital by his father in Gaza City on July 20. Hide Caption 59 of 73 Photos: Photos: Israel-Gaza crisis Israel-Gaza crisis – Palestinians flee their homes as Israeli troops focus their firepower on the Gaza town of Shaja'ia on Sunday, July 20. The shelling and bombing killed at least 60 people and wounded 300, according to the Gaza Health Ministry. Hide Caption 60 of 73 Photos: Photos: Israel-Gaza crisis Israel-Gaza crisis – Smoke rises after an Israeli missile hit Shaja'ia on July 20. Hide Caption 61 of 73 Photos: Photos: Israel-Gaza crisis Israel-Gaza crisis – A Palestinian child walks on debris from a destroyed house following an overnight Israeli strike in Beit Lahiya on Saturday, July 19. Hide Caption 62 of 73 Photos: Photos: Israel-Gaza crisis Israel-Gaza crisis – An explosion rocks a street in Gaza City on Friday, July 18. Hide Caption 63 of 73 Photos: Photos: Israel-Gaza crisis Israel-Gaza crisis – Israeli ground forces move to the Gaza border on July 18. Hide Caption 64 of 73 Photos: Photos: Israel-Gaza crisis Israel-Gaza crisis – Israeli soldiers patrol near the Israel-Gaza border on July 18. Hide Caption 65 of 73 Photos: Photos: Israel-Gaza crisis Israel-Gaza crisis – A relative mourns July 18 during the funeral of Rani Abu Tawila, a Palestinian who was killed in an Israeli attack on Gaza City. Hide Caption 66 of 73 Photos: Photos: Israel-Gaza crisis Israel-Gaza crisis – A Palestinian demonstrator, protesting Israel's military operation in Gaza, runs through smoke July 18 during clashes with Israeli soldiers at the entrance of the Ofer prison in the West Bank village of Betunia. Hide Caption 67 of 73 Photos: Photos: Israel-Gaza crisis Israel-Gaza crisis – This image, made from video shot through a night-vision scope, was released by the Israeli military on July 18. It shows troops moving through a wall opening during the early hours of the ground offensive in Gaza. Hide Caption 68 of 73 Photos: Photos: Israel-Gaza crisis Israel-Gaza crisis – Children stare as Palestinians flee Khan Yunis, Gaza, to safe areas July 18. Hide Caption 69 of 73 Photos: Photos: Israel-Gaza crisis Israel-Gaza crisis – An Israeli tank fires a shell into Gaza on July 18. Hide Caption 70 of 73 Photos: Photos: Israel-Gaza crisis Israel-Gaza crisis – A Palestinian carries a gas cylinder salvaged from the rubble of an apartment building after it was hit by Israeli fire on July 18. Hide Caption 71 of 73 Photos: Photos: Israel-Gaza crisis Israel-Gaza crisis – An Israeli reservist prays July 18 near the Gaza border by Sderot, Israel. Hide Caption 72 of 73 Photos: Photos: Israel-Gaza crisis Israel-Gaza crisis – Flare smoke rises into the Gaza City sky on Thursday, July 17. Hide Caption 73 of 73

Map of the Middle East

Israel: We're not responsible for last week's school deaths

The Israeli military said it was not responsible for anyone killed last week when an "errant Israeli mortar" hit the courtyard of a U.N. school that was shelter to many Gaza residents.

U.N. and Palestinian officials said 16 people were killed and hundreds were wounded Thursday when the school in northern Gaza was struck.

Israel Defense Forces spokesman Lt. Col. Peter Lerner said militants had fired anti-tank missiles from the immediate area of the school, and the IDF fired several mortar shells back in that direction.

"A single errant Israeli mortar landed in the courtyard in the school," Lerner said. "The footage we have shows the courtyard was empty."

"We reject the claim that people were killed by the IDF mortar on the school premises," he added. But Lerner said there could have been people who were wounded by shrapnel.

Israeli government spokesman, Mark Regev said, "The question is who is responsible, and for that we have to look at seriously and judiciously and make sure we get to the truth."

A CNN team that visited the shelter several hours after the mortar attack saw evidence that people were badly wounded at the courtyard.

The team saw blood and strewn possessions concentrated close to the edge of the courtyard along the wall of the building, the area that would have been shady around 3 p.m. when the school was hit.

The IDF released a high-altitude aerial video of the round hitting the school, but it did not have high resolution and it is impossible to tell if anybody was sitting on the courtyard edge.