U.S., allies target Russian oil imports as millions leave Ukraine

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President Joe Biden announced Tuesday that the United States would ban Russian oil imports, likely raising energy prices, in an effort to escalate sanctions on Russia — a move that the United Kingdom and other allies joined with their own efforts to target Russian petroleum.

The move was welcomed by Ukrainian President Volodymyr Zelenskyy. The Ukrainian leader appeared via video before the British Parliament and invoked Winston Churchill's famous 1940 rallying cry against the Nazis in a defiant speech.

“We will not surrender," he said in Ukrainian to thunderous applause. "We will not fail. We will fight till the end. We will fight on the seas, in the air and defend our land at any cost. We will fight in the forests, fields, beaches, cities, villages, on the streets, we will fight in the hills."

Since Russian forces attacked and invaded Ukraine, more than 2 million refugees have fled, the United Nations' refugee agency said.

In Washington, Lt. Gen. Scott Berrier of the U.S. Defense Intelligence Agency told lawmakers that 2,000 to 4,000 Russian soldiers had been killed thus far.