The Ukrainian president addresses the UN General Assembly after Donald Trump says for the first time that Kyiv could retake its lost borders.

Ukrainian President Volodymyr Zelenskyy said Russia launched more than 550 munitions into the country overnight in Moscow's latest deadly long-range barrage.

UK Foreign Secretary Yvette Cooper has told the UN that UK and NATO forces will confront unauthorised planes in Europe's skies, after recent Russian violations of airspace. Elsewhere, Vladimir Putin has made an offer on nuclear weapons to Donald Trump.

Russia fired more than 600 drones and missiles at targets across Ukraine in the early hours of Sunday morning - one of the largest barrages of the war.

A Russian strike hit a passenger train in Ukraine's northern Sumy region causing casualties among the passengers, regional governor Oleh Hryhorov said on Saturday. Hryhorov said the Russian attack had targeted a railway station,

Our military analyst Professor Michael Clarke answers your questions on the Ukraine war each week. Scroll down to catch up on his best answers - and watch it back in the video below.