Russian officials say Biden decision to let Ukraine fire missiles deep into Russia could lead to world war

President Biden's decision to allow Ukraine to fire U.S.-made and supplied missiles deeper into Russia — a major policy shift announced over the weekend after months of intense lobbying by Kyiv — has drawn a furious response from Moscow. While there was no immediate reaction directly from the man who launched the nearly three-year war on his neighboring nation, lawmakers aligned with President Vladimir Putin in Russia said Monday that the move was unacceptable and warned it could lead to a third world war.

Mr. Biden authorized Ukraine's President Volodymyr Zelenskyy to use American-made missiles with a range of almost 200 miles, known as ATACMS, to strike deeper inside Russian territory than the Ukrainians have to date.