Historians date the start of this second round of fighting between General Aoun's army and Samir Geagea's Lebanese Forces to the last days of January 1990. De Clerck and Malsagne give 31 January, when the army tried to retake positions the militia held at Furn al-Chubbak; they add that the militia's own attack had been planned for 7 February. Hanf dates the first shots to 27 January, over a school in Furn al-Chebbak that the militia refused to hand back to the Ministry of Education. Picard's chronology gives 30 January. The fighting lasted until a ceasefire in May (accounts of its end range from March to July). Aoun's side called it the war for 'unifying the guns'; it is often remembered as the 'War of Elimination'.

Hanf notes the blockade had little support even outside the enclave, as civilians rather than Aoun's soldiers bore it. On 28 September 1990, he records, Lahoud's troops tightened it by taking every checkpoint around Aoun's area; Aoun's followers protested daily there and at Baabda.