Ukraine is ordering its troops to be on the "highest level of combat readiness" on August 11, amid growing tensions with Russia over Crimea.
CNN: Ukraine troops on high alert amid growing tension with Russia
An armed pro-Russian separatist of the self-proclaimed Donetsk People's Republic (DNR) stands in front of the destroyed Donetsk International Airport, in Donetsk, on June 1, 2016.
