North Korea remains officially at war with South Korea, with the Korean War ending in 1953 with an armistice and not a peace treaty. The two Koreas each claim the territory of the other, and do not recognize each other as legitimate sovereign states. North Korea had nevertheless asked for the right to co-host the Summer Olympics in 1988, when Seoul made their bid to have the Games. Faced with the refusal expressed by the International Olympic Committee, the North boycotted the Games. The country then orchestrated an attack which destroyed Korean Air flight 858, killing one hundred and fifteen people. Despite these problems, at the 2000 and 2004 Summer Olympics and the 2006 Winter Games, the two Koreas marched together under the banner of Korean unification at the opening ceremony as a sign of reconciliation.