for right now. show up, however you can, for the foster kids who need it most— at helpfosterchildren.com i'm anderson cooper in lviv. you can hear air raid sirens going off, an automated voice telling people to seek shelter. this is the first time that's occurred today. citizens continue to leave -- women and children continue to leave this country when possible. the u.n. says europe is on the verge of its largest refugee crisis this century. officials say nearly 836,000 people have fled since the start of the russian invasion and the