US President Biden announces additional military aid during trip to Ukraine

US President Joe Biden has arrived in Poland after making a surprise visit to Ukraine. Biden flew from the Polish border into Warsaw on Air Force One, capping a long day of travel that included a trip to Kyiv by train. He announced another half a billion dollars of military aid for Ukraine - including ammunition, radar and other equipment. While in Warsaw, Biden will meet the Polish president, along with leaders of other countries on NATO's eastern flank. The US leader's diplomatic blitz comes just days ahead of the war's one year mark, and Russia's expected spring offensive.