Ukrainian officials have accused Russia of using a captured nuclear power plant as a place to store and launch weapons. As Russia has stepped up attacks on Ukrainian cities, air-raid sirens sounded in Kyiv on Saturday.
Overnight explosions made for a tense night in Ukraine, where cities have recently come under increased attack from Russia. Early Saturday morning explosions were heard in the cities of Kremenchuk and Odesa. Fires are reportedly still burning in the latter.
