Biden announces hundreds of millions in new security aid for Ukraine following Zelensky's speech

President Joe Biden on Wednesday announced an additional $800 million in security assistance to Ukraine as he sought to answer his Ukrainian counterpart's impassioned call for help and leadership delivered to Congress earlier in the day.

"The world is united in our support for Ukraine and our determination to make (Russian President Vladimir) Putin pay a very heavy price," Biden said before signing a presidential memorandum at the White House to deliver the military assistance. "America is leading this effort, together with our allies and partners, providing an enormous level...