President Biden spoke by phone with Ukrainian President Volodymyr Zelensky Tuesday as Ukrainian forces continued to drive back Russian invaders on two fronts. The call took place days after Russian tyrant Vladimir Putin claimed to annex four regions of Ukraine — some 18% of the country — and vowed to back up his claim with nuclear weapons if necessary. Biden signed a bill Friday authorizing another $12 billion in US aid for the Kyiv government while insisting the US will “never” accept Russia’s annexation attempt. Biden, joined on Tuesday’s call by Vice President Kamala Harris, “underscore[d] that the United States...