 The Ukrainian president, Volodymyr Zelensky, is at Downing Street to address the British cabinet. He's the first foreign leader to do so for nearly three decades. Mr. Zelensky is briefing the new government about the current battlefield situation in Ukraine. He was also expected to tell them that his country needed long-range missiles and permission to use them against targets inside Russia. The British Prime Minister, Keir Starmer, has promised to take stronger action to enforce sanctions against Russia.