 Iceland kept its promise, and on February 4, 1991, just three weeks after the attacks, it recognized the Republic of Lithuania as a sovereign independent state, and diplomatic relations were established between the two nations.These events are considered some of the main factors that led to the overwhelming victory of independence supporters in a referendum on February 9, 1991.Turnout was 84.73% of registered voters; 90.47% of them voted in favour of the full and total independence of Lithuania.