Russia on Wednesday turned down Secretary of State John Kerry's invitation to an emergency meeting on Ukraine, further adding to the growing tensions between Moscow and Washington. Kerry hosted the meeting in Paris with the foreign ministers of Ukraine and Great Britain, which signed a 1994 treaty along with the U.S. and Russia guaranteeing Ukraine's territorial integrity if it gave up its nuclear arsenal. The three countries on Wednesday slammed Russia's “continued violation of Ukraine’s sovereignty and territorial integrity,” which they said would “only degrade Russia’s international standing and lead to greater political and economic consequences.” “We deeply regret that...