Russian troops zero in on Kyiv as 150,000 Ukrainians flee

KYIV, Ukraine (AP) — Russian troops closed in on Kyiv and skirmishes flared on its outskirts Saturday as Ukraine’s leader vowed to continue battling an invasion by a much better-armed adversary. Terrified men, women and children sought safety inside and underground amid a 39-hour curfew the government imposed to keep people off the streets.The United Nations said more than 150,000 Ukrainians had fled for Poland, Moldova and other neighboring countries and warned the number could grow