NEW YORK - The 70th UN General Assembly opened Monday afternoon with a marathon of successive speeches of world leaders.

U.S. President Barack Obama addressed the General Assembly in a speech that failed to include any mention Israel or the Palestinians.

On Iran, the president said the world will be a safer place if the nuclear deal is fully implemented. "Iran's proxy wars only isolated it," he said. "Chanting 'Death to America' doesn't create job or make Iran more secure."

Regarding the situation in Syria, the president said that the U.S. is willing to work with Russia, as well as Iran to achieve a "managed transition" to remove Syrian leader Bashar Assad from power.

Obama also said the world "can't stand by" as Russia violates Ukraine's sovereignty." "Today it's Ukraine but tomorrow it will be someone else," he said. "Russian invasion of Ukraine only led it to get closer to the EU and further away from Russia.

Jordan's King Abdullah warned against "threats to holy places and the Arab character of Jerusalem" – a reference to recent tensions on the Temple Mount.

He also called ISIS "a gang that distorts Islam" and "must be defeated."

Brazilian President Dilma Rousseff, who was the first world leader to speak, said the world cannot postpone the creation of a Palestinian state alongside Israel. "We can't tolerate the expansion of settlements," she said.

United Nations General Secretary Ban Ki-moon opened the session with a speech that called on the world to aid millions around the world who are in need of humanitarian assistance. He also called on the U.S., Russia, Saudi Arabia and Turkey to reach a compromise that will end the crisis in Syria.

Monday's line-up includes speeches by Jordan's King Abdullah, Iran's Hassan Rohani and Russian President Vladimir Putin. This is the first general assembly attended by the Russian leader in a decade.

A few hours after the speeches, at around 5 pm ET, Putin and Obama will meet for a highly anticipated summit.

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11:42 P.M. U.S. President Barack Obama and Iran Foreign Minister Mohammad Javad Zarif shake hands on the sidelines of the General Assembly. It was the first handshake between a U.S. president and a senior Iran official since the 1979 revolution.

9:45 P.M. European Union foreign policy chief Federica Mogherini says the Iran nuclear talks could serve as a model for negotiations on ending the war in Syria, adding that format is only one of several being considered. But she says the negotiations between Iran and six world powers that resulted in the July 14 deal curbing Tehran's nuclear programs in return for sanctions relief "could be an option."

9:02 P.M. Foreign ministers of Iran and the six world powers begin their first meet since reaching the historic nuclear deal.

9:00 P.M. U.S. President Barack Obama and Russian President Vladimir Putin met privately Monday, several hours after their dueling speeches at on the first day of the UN General Assembly. Read full story here

5:15 P.M. U.S. President Barack Obama and Russian President Vladimir Putin begin their meeting at UN headquarters in New York.

2:22 P.M. King Willem-Alexander of the Netherlands begins his address to the UNGA, says coooperation in the face of the refugee crisis is 'crucial.'

2:00 P.M. President Filipe Jacinto Nyusi, of Mozambique, begins address.

1:40 P.M. French President François Hollande begins speech, discusses climate change.

1:26 P.M. Qatar's Sheikh Tamim Bin Hamad Al-Thani says Israeli settlements are the 'last de facto colonial issue,' extremist religious Jews are 'desecrating sanctity' of Jerusalem, and Israel has obligation to lift the 'unjust siege' of Gaza strip.

1:04 P.M. Rohani: We expect world powers to work on creation of a nuclear free zone in the Middle East and not to let the 'zionist regime' prevent it.

1:02 P.M. World powers should fully implement the nuclear deal.

1:00 P.M. Rohani dismisses idea that Iran ever wanted to develop nuclear weapons, says that international sanctions against the Islamic Republic were unfair and never influenced policy.

12:56 P.M. Rohani: A new chapter has started in Iran's relations with the world.

12:55 P.M. Rohani slams Saudis for Hajj disaster, calls for independent investigation.

12:52 P.M. President Hassan Rohani of Iran begins speech, decries mismanagement of hajj disaster by Saudi Arabia.

12:50 P.M. Korea's President Park Geun-hye calls for a 'unified Korea.'

12:20 P.M. Putin calls for a coalition against ISIS like the anti-Hitler coalition in WW2.

12:18 P.M. Putin calls for restoring central government in Libya and supporting the governments of Iraq and Syria.

12:14 P.M. Putin: It is hypocritical to talk about international terrorism while supporting terror groups.

12:10 P.M. Putin slams U.S. intervention in the Middle East and its attempts to export democracy, says ISIS was formed by former Iraqi soldiers who were thrown to the streets after the U.S. invasion.

12:03 P.M. Putin praises the UN for its work in the last 70 years.

12:02 P.M. Russian President Vladimir Putin begin speech.

12:00 P.M. King of Jordan: We reject threats to the holy places and the Arab character of Jerusalem.

11:46 A.M King Abdullah of Jordan: ISIS a gang that distorts Islam. They must be defeated.

11:46 A.M. King Abdullah II addresses the UNGA, says future is threatened by 'outlaw gangs' of Islam.

11:31 A.M. President Xi of China: the big and powerful countries shouldn't bully the small and weak countries.

11:28 A.M. Chinese President Xi Jinping addresses the UNGA.

10:58 A.M. Obama: Democracy in the U.S. is not perfect but it is what allowed us to become the most powerful nation on earth.

10:53 A.M. Obama: I believe that a government that suppresses dissent doesn't show strength but weakness and fear.

10:50 A.M. Obama: No country can escape climate change and we should put future generations first.

10:47 A.M. We are prepared to work with any nation, including Russia and Iran, to resolve the conflict in Syria.

10:45 A.M. Obama: Military power will not be enough to solve the crisis in Syria. A solution in Syria needs to be with transition from Assad to a new leader.

10:44 A.M. Obama on Syria: When a dictator slaughters tens of thousands of his own people it is not a matter of country's internal affairs

10:42 A.M. There is no room for accommodating an apocalyptic cult like ISIS, Obama says

10:39 A.M. Iran's proxy wars only isolated it; chanting 'Death to America' doesn't create job or make Iran more secure

10:38 A.M. Obama: Nations succeed when they peruse inclusive peace. This path is available for a country like Iran now

10:35 A.M. Obama: We can't stand by as Russia violates Ukraine's sovereignty. Today it's Ukraine but tomorrow it will be someone else. Russian invasion of Ukraine only led it to get closer to the EU and further away from Russia.

10:31 A.M: U.S. president: If this deal with Iran is fully implemented are world will be safer

10:30 A.M. Obama: The goal of sanctions was not to punish Iran, but to test Iran

10:27 A.M. U.S. president says the U.S. can't solve the world's problems on its own

10:26 A.M. Obama: We can't go back to the old ways of coercion

10:25 A.M. Obama: We see in the U.S. an argument that diplomacy will not work and that we should use force

10:24 A.M. Obama: Some people say we should support tyrants like Assad because the alternative is much worse

10:23 A.M. Obama says some world powers operate in contradiction of international law

10:22 A.M. Obama: In the last 70 years the U.S. worked to prevent a third world war. The march of human progress never travels in a straight line.

10:15 A.M. U.S. President Barack Obama addresses the UN General Assembly.

10:05 A.M. President of Brazil says she welcomes the renewal of diplomatic relations between the U.S. and Cuba and the nuclear deal with Iran.

10:02 A.M. President of Brazil: We can't postpone the creation of a Palestinian state alongside Israel. We can't tolerate expansion of settlements.

10:00 A.M. President of Brazil: It is absurd to prevent the free movement of people (refugees) in Europe, adds Brazil is ready to absorb refugees as it did in the past.

9:57 A.M. President of Brazil: Proliferation of regional conflicts and spread of terrorism show that the UN has a big challenge.

9:54 A.M. Brazilian President Dilma Rousseff addresses the assembly.

9:40 A.M. UN General Assembly President Mogens Lykketoft addresses the GA

9:36 A.M. Ban finishes speech.

9:28 A.M. Ban says the international community must pressure Israelis and Palestinians to make progress towards peace.

9:27 A.M. Ban calls on U.S., Russia, Iran, Saudi Arabia and Turkey to reach a compromise that will end the crisis in Syria.

9:27 A.M. Ban: It is not enough to build walls to stop refugees but there is a need to treat root causes in the countries of origin.

9:26 A.M. Ban calls on EU member states to do more to help refugees.

9:23 A.M. Ban: People want assistance but need lasting solutions. We need not only keep people alive but give people a life.

9:20 A.M.: UN Secretary General Ban Ki-moon says 100 million people around the world are in need of humanitarian assistance.

9:07 A.M. United Nations General Secretary Ban Ki-moon opens session with video lauding the role of the UN.

9:00 A.M. The 70th UN General Assembly opens in the United Nations Headquarters in New York City.

AP contributed to this report.