22 May
1990
The unification of north (Yemen Arab Republic) and south (People’s Democratic Republic of Yemen) forms the Republic of Yemen under President Ali Abdullah Saleh.
May-July
1994
Civil war between the armies of the north and south, in which President Saleh prevents the south from splitting with the north.
Year
2000
Al-Qaeda emerged in Yemen after the bombing of the USS Cole at the port of Aden, prompting the United States to pressure the Yemeni government to combat terrorism.
Year
2004
Hostilities between the Houthi group (Ansar Allah) and Yemen’s Government lead to armed confrontations and several wars that continue until 2010.
July
2007
Inception of the Southern Hirak Movement calling for Southern autonomy.
January
2009
Al-Qaeda branches of Saudi Arabia and Yemen merge under Al-Qaeda in the Arabian Peninsula (AQAP).
Year
2011
Arab Spring protests demand the end of Saleh’s 33-year rule. Despite violent efforts to crack down on the protests, Saleh eventually signs a deal to hand his powers to Abdrabbuh Mansur Hadi to form a unity government.
21 February
2012
Abdrabbuh Mansur Hadi is sworn in as the new President of Yemen after running unopposed.
18 March
2013
National Dialogue Conference (NDC) begins, with participation of different political groups to discuss the country’s main problems including the drafting of a more inclusive, federal constitution.
25 January
2014
The NDC concludes with a document offering outcomes and recommendations to address issues ranging from transitional justice, governance, state building and the constitution, to dealing with grievances in Sa’ada and the South.
September
2014
Following weeks of protests and backed by forces loyal to Ali Abdullah Saleh, the Houthis seize the capital Sana’a. Despite the signature of a Peace and National Partnership Agreement between the Houthis and the Yemeni government just hours after the capture, the Houthis continue their military expansion and shortly thereafter capture the port city Hodeidah.
January
2015
After failure to negotiate an agreement with the Houthis, Hadi resigns as President.
February
2015
Houthis announce the suspension of the constitution and seize the Government. Hadi flees the presidential palace in Sana’a and escapes to Aden, where he later rescinds his resignation.
March
2015
Houthis advance toward southern Yemen. President Hadi flees Aden and takes refuge in Saudi Arabia.
26 March
2015
A coalition of Arab states, led by Saudi Arabia, enters the conflict to restore Hadi’s government, with airstrikes targeting the Houthis.
June
2015
The Houthis launch their first ballistic missile toward Saudi Arabia, which is intercepted by the Royal Saudi Air Defense Forces. In the years to follow, they begin using more advanced missiles against Saudi targets.
May
2017
The Southern Transitional Council (STC) is formed to push for Southern independence.
Dcember
2017
Former President Ali Abdullah Saleh is killed by the Houthis after the collapse of their alliance.
December
2018
Negotiations in Sweden conclude with the Stockholm Agreement, committing parties to a ceasefire, a redeployment of troops in Hodeidah and managing of its ports, a mechanism for prisoner swaps, and an understanding on the city of Taiz, which was under blockade since 2015.
August
2019
Southern separatists seize the presidential palace in Aden after days of clashes with government loyalists.
5 November
2019
The Hadi-led Government of Yemen and the STC sign the Riyadh Agreement to end repeated fighting and strengthen the anti-Houthi front.
25 April
2020
The STC claims self-rule over several southern provinces, including the temporary capital Aden.
February
2021
The United States end their support for the Saudi-led coalition’s military operations and removes the Houthis from a “terrorist” blacklist.
2 April
2022
A national UN-brokered ceasefire is reached and comes into effect on 2 April. Despite some allegations of violations, the ceasefire largely holds, showing the lowest levels of violence seen since 2015.
7 April
2022
President Hadi hands his powers to a new Presidential Leadership Council (PLC), led by Rashad Al-Alimi, in efforts consolidate partnerships with political forces, enhance power sharing, and re-organize the government.
2 October
2022
UN-mediated truce expires after two renewals, without the parties reaching an agreement.
April
2023
Following a China-brokered rapprochement between Iran and Saudi Arabia, Saudi officials join peace negotiations in the Houthi-controlled capital Sana’a after years of deadlock.
September
2023
A delegation of Houthi officials and Omani mediators visits Saudi Arabia for a five-day round of negotiations in the first official visit by Houthis to the country since 2014. Despite widespread optimism, no concrete agreement emerged from the visit.
October
2023
Following escalations in the Gaza strip, the Houthis declare their entry into the war in support of Palestine. In the following weeks, the Houthis target several ships in the Red Sea, causing large-scale interruptions of international sea trade.
January
2024
The United States and the United Kingdom carry out coordinated air strikes on Houthi targets in Yemen. The Biden administration re-designates the Houthis as a Specially Designated Global Terrorist (SDGT). Attacks on ships in the Red Sea and strikes on Houthi-held territory continue throughout 2024.
June
2024
The Houthis sentence 44 people to death for collaborating with the Saudi-led coalition and detain several employees of UN agencies and aid organisations.
20 July
2024
Israel strikes oil refineries and power stations in Hodeidah. In response, the Houthis attack the Israeli city Eilat on the following day. Direct escalations between Israel and the Houthis continue in the following months.
January
2025
Following Trump’s inauguration as the 47th President of the United States, the US renews its designation of the Houthis as a Foreign Terrorist Organization (FTO).