On 5 February 1994, Sarajevo suffered its deadliest single attack of the entire siege with the first Markale massacre, when a 120 millimeter mortar shell landed in the centre of the crowded marketplace, killing 68 people and wounding another 144.
On 9 February 1994, NATO authorized the Commander of Allied Forces Southern Europe (CINCSOUTH), US Admiral Jeremy Boorda, to launch air strikes—at the request of the UN—against artillery and mortar positions in or around Sarajevo determined by UNPROFOR to be responsible for attacks against civilian targets.
The Croat-Bosniak war ended with the signing of a ceasefire agreement between the HVO Chief of Staff, general Ante Roso, and the ARBiH Chief of Staff, general Rasim Delić, on 23 February 1994 in Zagreb. The agreement went into effect on 25 February.
Under pressure from the United States, the belligerents agreed on a truce in late February, followed by a meeting of Croatian, Bosnian, and Bosnian Croat representatives with US Secretary of State Warren Christopher in Washington, D.C. on February 26, 1994.