President Vladimir Putin signs new military doctrine outlining dangers.
He expressed “strong concern” of the Russian troop buildup along its border with Ukraine.
John Kerry and Sergei Lavrov failed to defuse the crisis in a six-hour meeting.
The Russian foreign minister called the decision to impose sanctions "unconstructive."
Putin views this situation through a zero-sum competition prism.
Secretary of State John Kerry said Thursday he might meet Russian Foreign Minister Sergei Lavrov at...
The two diplomats will meet on neutral ground in London.