Ukraine's President Petro Poroshenko has said a "military threat from the east" will remain even if a cease-fire holds between government troops and pro-Russian rebels in the east.
Russia's War Against Ukraine
BBC: Poroshenko says ‘military threat from east to remain’ despite truce
Pro-Russian separatists of the self-proclaimed Donetsk People's Republic (DPR) attend a rally to mark Defenders of the Fatherland day, a Soviet-era holiday, at Lenin square in Donetsk on Feb. 23.