WASHINGTON (Reuters) - U.S. President Joe Biden and Canadian Prime Minister Justin Trudeau, in a phone call on Friday, underscored their commitment to holding Russia accountable for its invasion of Ukraine and discussed efforts to provide security assistance to Ukraine, the White House said in a statement.

       Biden and Trudeau also discussed their upcoming participation in the Summit of the Americas in June in Los Angeles, it said.

       (Reporting by Eric Beech)