Russia has called for a fair and independent investigation into a bus attack in eastern Ukraine in which at least 12 people were killed.
Foreign minister Sergey Lavrov.
"We warn our Ukrainian colleagues against attempts to return again to forceful scenarios. Only through a direct dialogue, only by peaceful means, this conflict can be settled. "
The comemnt comes afer Ukrainian President Petro Poroshenko signed a decree to call up at least 50,000 military reservists.
The decree is expected to reach the floor of the parliament later today.
Kiev has been blaming rebles in the eastern Ukraine for the attack.
The rebel forces have rejected the blame.
