singing. this is the mood here in the centre of kyiv tonight a night of celebration on what president zelensky describes as an historic day. look at the banners they are holding here, kherson is ukraine, written in the colours of the ukrainian flag. they have been singing here for hours, singing popular songs, like this, singing the ukrainian national anthem. this is the most significant victory for ukrainian forces in some time and certainly one of the most significant reversals for the russians. president zelensky says that ukrainian forces are now joining its special units in the centre of kherson. we ve spoken to people here tonight who believe that moments like this are bringing the end of the war closer, bringing them closer to the victory they have always believed was possible. but this war is far from over.
welcome to bbc news. i m lucy grey. our top stories: crowds cheer ukrainian troops as they enter kherson after russia s retreat. the ukrainian president hails it as an historic day and thousands celebrate. they ve been singing here for hours, singing popular songs, like this, singing the ukrainian national anthem. this is the most significant victory for ukrainian forces in some time. moscow describes the troop withdrawal as a military manoeuvre but analysts call it one of the biggest failures of russia s invasion of ukraine. president biden urges countries at the cop27 climate summit in egypt to raise their ambitions, saying the us is on track to meet its own targets. one of the world s biggest cryptocurrency exchanges, ftx, has gone bust and its