 Colombia also provided a battalion and a naval ship during the UN's only previous experience with peace-enforcement, the Korean War, while Argentina sent two warships on blockade duty during the first Gulf War.Colombia and Uruguay have also provided significant troop units (a battalion of infantry and an engineer unit, respectively), to the Multinational Force and Observers (MFO) which has acted as third-party peace-observers in the Sinai desert on the border between Egypt and Israel since 1982 (although this particular mission was mandated by the Camp David accords, and is not a UN effort).Argentina has in the past few years been one of the most consistent supporters of UN peacekeeping (as well as the UN/coalition effort in the Gulf War).