Russian President Vladimir Putin
attends a news conference with Turkish President Tayyip Erdogan (not
seen) following their meeting in St. Petersburg, Russia, August 9, 2016.
REUTERS/Sergei Karpukhin
The announcement comes two days after President Vladimir Putin promised to take counter-measures after what he said were clashes between Russian forces and Ukrainian saboteurs in northern Crimea.
Ukraine denies the clashes took place. Russia annexed Crimea from Ukraine in 2014.
Source: http://www.reuters.com/article/us-ukraine-crisis-crimea-missiles-idUSKCN10N1H4