Eelam War II is the name given to the second phase of armed conflict between Sri Lankan military and the separatist Liberation Tigers of Tamil Eelam. The war started after the failure of peace talks between the Premadasa government and the LTTE. This phase of the war was initiated by the LTTE who massacred almost 600 Sinhalese and Muslim police personnel after they were ordered by the Premadasa government to surrender to the LTTE. The truce was broken on June 10, 1990 when the LTTE in October expelled all the 28,000 Muslims residing in Jaffna. Military operations The Eelam War II, saw the LTTE shifting to conventional warfare tactics with the deployment of large groups of soldiers to first attack isolated Sri Lanka Army detachments of platoon or company strength in the Northern Province such as Kokavil in June and July 1990 where it overran the detachment; Mullaitivu September 1990 which was relieved by Operation Sea Breeze the first amphibious operation launched by the Sri Lankan military; while it kept the army garrison at the Jaffna Fort besieged until it was broken by Operation Thrividha Balaya in September 1990. A major change in LTTE tactics came in the First Battle of Elephant Pass in which the LTTE besieged the army garrison of a full battalion strength at the strategic Elephant Pass from 10 July to 9 August 1991 until a relief force that had been led from the sea under Operation Balavegaya broke the siege. Casualties were high and the LTTE had deployed a large force of 5,000 cadres to lay siege to the army base and stop the relief force. LTTE continued to engage the army in small skirmishes and ambushes. The army also launched several limited operations with the aim of drawing out and killing LTTE carders. In August 1992, the military lost several of its senior leaders in a landmine explosion Araly point which killed Major General Denzil Kobbekaduwa and Brigadier Vijaya Wimalaratne, both charismatic field commanders, followed by the assassination of the head of the navy Vice Admiral Clancy Fernando in Colombo by a suicide bomber. In 1993, Sri Lankan President Ranasinghe Premadasa was assassinated by a LTTE suicide bomber on May day and LTTE was able to launch two major attacks on army detachments in the Battle of Janakapura and the Battle of Pooneryn, which resulted in major loss of life and equipment for the