sentences:  Russia previously bought 12 drones from the Israel Aerospace Industries following the war in South Ossetia.Diplomatic relations between Israel and Serbia's predecessor state, Yugoslavia, were severed for twenty-four years, from 1967 until 1991, when they were officially renewed, by which time Yugoslavia was in the process of disintegration.Diplomatic relations continued when, in April 1992, the two remaining Yugoslav republics, Serbia and Montenegro, formed the Federal Republic of Yugoslavia (renamed to Serbia and Montenegro in February 2003).