WILMINGTON/, De. (Reuters) -U.S. President Joe Biden on Sunday told Ukraine's President Volodymyr Zelenskiy the United States and its allies will "respond decisively" if Russia further invades Ukraine, the White House said in a statement.
The call came days after Biden held a second conversation https://www.reuters.com/world/europe/biden-speak-with-ukraine-president-sunday-white-house-2021-12-31 in a month with Russian President Vladimir Putin amid tensions on Russia's border with Ukraine, where Russia has massed some 100,000 troops.