Former Russian president Dmitry Medvedev, whose comments prompted US President Donald Trump to move two nuclear submarines, was once seen as a liberal reformer but has become one of the Kremlin's most prominent anti-Western hawks.
The 59-year-old, who served as head of state between 2008 and 2012, sought "friendly" ties with Europe and the United States during his single term but faded into obscurity after handing the post back to President Vladimir Putin.
