Russia Demands Apology After Biden Called Putin A 'Killer Without A Soul'

Vladimir Putin wished Joe Biden 'good health' on Thursday after the U.S. president called him a 'killer' - a description seen as an insult by the Russians and has escalated tensions between the two countries. 

The Russian president made the veiled threat in an interview on state TV. Western officials have accused Putin ordering the assassination attempt of his most vocal domestic critic, Aleksei Navalny, which Putin has denied.