The US-Russia summit lets Putin get back to the top table of international diplomacy and thumb his nose at critics. Here’s what else he stands to gain.

By Andrea Shalal, Thomas Escritt and Tom Balmforth WASHINGTON/BERLIN (Reuters) -U.S. President Donald Trump threatened "severe consequences" if Russia's Vladimir Putin does not agree to peace in Ukraine but also said on Wednesday that a meeting between them could swiftly be followed by a second that would include the leader of Ukraine.