NEWPORT, Sept. 4 - NATO's top official accused Moscow outright on Thursday of attacking Ukraine as allied leaders gathered for a summit to buttress support for Kiev and bolster defenses against a Russia they now see as hostile for the first time since the Cold War, Reuters reported.

U.S. President Barack Obama and his 27 allies meeting at a golf resort in Wales will also discuss how to tackle the Islamic State straddling parts of Iraq and Syria, which has emerged as a new threat on the alliance's southern flank, and how to stabilize Afghanistan when NATO forces leave at year's end.