welcome to bbc news. i'm mark lobel. our top stories: as the war in ukraine enters its second month, the country's president calls for a show of support around the world. come from your offices, your homes, your schools and universities. come in the name of these. with ukrainian symbols to support freedom, to support life. nato says it'll double the number of battle groups deployed on its eastern flank in response to russia's invasion. a siege without end: we talk to one of the survivors of mariupol, the ukrainian city under relentless russian shelling. no return to class for the girls of afghanistan: the taliban orders secondary schools to remain closed.