(CNN) Here's a look at Yemen, a country located on the southwestern tip of the Arabian Peninsula, sharing a border with Saudi Arabia and Oman.

About Yemen

(from the CIA World Fact Book 527,968 sq km (twice the size of Wyoming)

Population: 29,884,405 (July 2020 est.)

Median age: 19.8 years

Capital: Sanaa

Ethnic groups: Predominantly Arab, also Afro-Arab, South Asian and European

Religions: (99.1%: an estimated 65% are Sunni and 35% are Shia) and small numbers of Christian, Muslim (99.1%: an estimated 65% are Sunni and 35% are Shia) and small numbers of Jewish, Hindu and Baha'i (2010)

GDP (purchasing power parity): $73.63 billion (2017 est.)

GDP per capita: $2,500 (2017 est.)

Unemployment: 27% (2014 est.)

Other Facts

Yemen is part of the Arab League.

Timeline

May 22, 1990 - The Republic of Yemen is created from the unification of North Yemen, the Yemen Arab Republic and South Yemen, the People's Democratic Republic of Yemen.

May-July 1994 - A civil war between northerners and southerners begins due to disagreements between supporters of A civil war between northerners and southerners begins due to disagreements between supporters of President Ali Abdullah Saleh, from North Yemen, and Vice President Ali Salim al-Baid, from South Yemen. Troops loyal to Saleh win the war.

September 25, 1999 - Saleh wins the country's first direct presidential election, with 96.3% of the vote. Opposition leaders allege tampering at the ballot box.

September 23, 2006 - Saleh wins reelection to a seven-year term with 77% of the vote.

January 2, 2010 - US President Barack Obama announces a new counterterrorism partnership with Yemen, involving intelligence sharing, military training and joint attacks.

September 23, 2011 - after more than three months of medical treatment in Saudi Arabia. Saleh returns to Yemen after more than three months of medical treatment in Saudi Arabia.

January 21, 2012 - Parliament approves a law that grants Saleh immunity from prosecution.

February 25, 2012 - Hadi is sworn in as president.

December 5, 2013 - Militants attack a Defense Ministry hospital in Sanaa. They ram the building with an explosives-laden vehicle and gunmen battle security forces inside. At least 52 people are killed, including four foreign doctors, according to the government.

February 10, 2014 - State news reports that Hadi has approved making Yemen a federal state consisting of six regions: two in the south, and four in the north. Sanaa is designated as neutral territory.

January 20, 2015 - Houthi rebels take over the presidential palace.

January 22, 2015 - shortly after the prime minister and the cabinet step down. Houthis say they will withdraw their fighters from Sanaa if the government agrees to constitutional changes including fair representation for marginalized groups within the country. No agreement is reached. President Hadi resigns shortly after the prime minister and the cabinet step down. Houthis say they will withdraw their fighters from Sanaa if the government agrees to constitutional changes including fair representation for marginalized groups within the country. No agreement is reached.

February 11, 2015 - The United States and the United Kingdom suspend embassy operations in Yemen.

March 22, 2015 - Houthi rebels seize the international airport in Taiz.

April-August 2016 - Direct peace talks between the warring parties take place in Kuwait, but fail after Houthi rebels reject a UN proposal aimed at ending the war. Yemeni government officials leave the discussions shortly afterward.

November 28, 2016 - in the capital. Abdul Aziz Habtoor, who defected from Hadi's government and joined the Houthi coalition in 2015, is its leader, according to the movement's news agency Saba. The Iranian-backed Houthi movement forms a new government in the capital. Abdul Aziz Habtoor, who defected from Hadi's government and joined the Houthi coalition in 2015, is its leader, according to the movement's news agency Saba.

February 8, 2017 - Two senior Yemeni officials tell CNN that the government has requested that the United States stop ground operations in the country unless it has full approval.

October 16, 2017 - US forces conduct airstrikes against two ISIS training camps in what a defense official tells CNN are the US forces conduct airstrikes against two ISIS training camps in what a defense official tells CNN are the first US strikes specifically targeting ISIS in Yemen.

November 6, 2017 - The move is in retaliation for the attempted missile strike on Riyadh. Saudi Arabia blocks humanitarian aid planes from landing in Yemen. The move is in retaliation for the attempted missile strike on Riyadh.

December 4, 2017 - Saleh is killed by Houthi rebels as he tries to flee Sanaa.

December 21, 2017 - that one million cases of cholera have been reported in Yemen since the outbreak began during the spring. More than 2,200 people have died, according to the World Health Organization. It is the largest outbreak of the disease in recent history. The International Committee of the Red Cross announces that one million cases of cholera have been reported in Yemen since the outbreak began during the spring. More than 2,200 people have died, according to the World Health Organization. It is the largest outbreak of the disease in recent history.

August 3, 2018 - The World Health Organization warns that Yemen is teetering The World Health Organization warns that Yemen is teetering on the brink of a third cholera epidemic.

August 9, 2018 - Fifty-one people are killed in total. Later, munitions experts tell CNN that the bomb, a 500-pound laser-guided MK 82 bomb made by Lockheed Martin, was sold as part of a US State Department-sanctioned arms deal with Saudi Arabia. The Saudi coalition blames "incorrect information" for the strike, admits it was a mistake and takes responsibility. A Saudi-led coalition bombs a school bus, killing 40 boys returning from a day trip in the northern Saada governorate. Fifty-one people are killed in total. Later, munitions experts tell CNN that the bomb, a 500-pound laser-guided MK 82 bomb made by Lockheed Martin, was sold as part of a US State Department-sanctioned arms deal with Saudi Arabia. The Saudi coalition blames "incorrect information" for the strike, admits it was a mistake and takes responsibility.

August 11, 2019 - which had been the seat of the Saudi-backed government since Houthis took over Sanaa in 2014. A spokesperson for Yemeni separatists tells CNN that they have taken control of Aden, which had been the seat of the Saudi-backed government since Houthis took over Sanaa in 2014.