this is bbc news 7 welcome if you re watching here in the uk or around the globe. our top stories... multiple explosions are heard in the western city of lviv — smoke rises over the ukrainian city as russian rocket attacks continue. president biden visits poland where he met ukrainian refugees and addressed crowds in warsaw. he had this message about vladimir putin. for god sake, this man cannot remain in power. with the continuous missile attacks in the capital kyiv and surrounding areas — we assess the destruction left behind.