Ukraine Calls Cease-Fire; Russia Says Post Was Hit.

The article reports on the cease-fire proposed by Ukraine in its battle against separatists in the country's east and the accusation made by the U.S. administration that the Kremlin in Moscow, Russia is continuing to arm the rebels. It says that Ukrainian President Petro O. Poroshenko has emphasized that the plan hinges on sealing a border with Russia. It states that a senior U.S. administration official has told reporters that Russian Special Forces continue to support separatists fighters.