President Donald Trump on Tuesday doubled his planned tariff on all steel and aluminum products coming into the United States from Canada, bringing the total to 50%, in response to the province of Ontario placing a 25% tariff on electricity coming into the U.S.

Trump will also meet the CEOs of America's biggest companies, many whose market value has dipped in recent days as recession and inflation fears soured consumer and investor sentiment.

Senior officials from Ukraine and the United States opened talks in Saudi Arabia on how to end the three-year war, hours after Kyiv launched its biggest ever drone attack on Moscow.