AP, Moscow :Russian President Vladimir Putin on Saturday ordered military forces in central Russia on combat alert as well as a drill of airborne troops, a day after Ukraine ordered a ceasefire with pro-Russian rebels.Nato said earlier this week that Russia has resumed a military build-up on the border with Ukraine where pro-Russian separatists have been fighting government forces for weeks in a conflict that has left about 300 people dead and displaced over 34,000.Ukrainian President Petro Poroshenko ordered his forces to cease fire Friday and halt military operations for a week, the first step in a peace plan he hopes will end the fighting that has killed hundreds. The Kremlin dismissed the plan, saying it sounded like an ultimatum and lacked any firm offer to open talks with insurgents.
