Biden pledges new Ukraine aid, warns Russia on chemical weapons

President Joe Biden and Western allies pledged new sanctions and humanitarian aid on Thursday in response to Vladimir Putin?s assault on Ukraine, but their offers fell short of the more robust military assistance that President Volodymyr Zelenskyy pleaded for in a pair of live-video appearances.

Russia-Ukraine war: Key things to know about the conflict

Ukraine has rejected a Russian offer to evacuate its troops from the besieged city and Russian bombardment continues. One 77-year-old who fled to Poland from Mariupol says 90% of the city has been destroyed.