Ukrainian President Volodymyr Zelensky told President Joe Biden to "calm down the messaging" about the threat of a Russian invasion because it was stirring panic, CNN reported, citing an unnamed Ukrainian official. Biden and Zelensky spoke by phone Thursday amid rising tensions between Russia — which is amassing tens of thousands of troops at Ukraine's border — Ukraine, the US, and NATO. Biden told Zelensky on Thursday that a Russian invasion could happen as soon as February, when the ground freezes over, tweeted Emily Horne, White House National Security Council spokesperson. However, Zelensky told Biden in the call that Ukraine...