Ukraine hit by cyber attack as U.S. questions Russian troop pullback

FILE PHOTO: Russian servicemen drive tanks during military exercises in the Leningrad Region, Russia, in this handout picture released February 14, 2022. Russian Defence Ministry/Handout via REUTERS/File Photo

KYIV/MOSCOW/WASHINGTON (Reuters) - Kyiv appeared to blame Russia for a cyber attack on Tuesday as U.S. President Joe Biden warned that more than 150,000 Russian troops were still amassed near Ukraine's borders after Moscow's announcement of a partial pullback was met with scepticism.

World powers are engaged in one of the deepest crises in East-West relations for decades, jostling over post-Cold War influence and energy supplies as Moscow wants to stop the former Soviet neighbour ever joining the NATO military alliance.