Interior minister says militants have attacked police station , causing heavy casualties . Putin : 'Only on equal terms ' Putin says he wants to persuade Poroshenko to end conflict through peaceful means . Speaker tells Parliament that Ukraine military has restarted operation against militants . Poroshenko declares an end to a unilateral cease - fire with pro - Russian forces .
Interior minister says militants have attacked police station , causing heavy casualties . Putin says he wants to persuade Poroshenko to end conflict through peaceful means . Speaker tells Parliament that Ukraine military has restarted operation against militants . Poroshenko declares an end to a unilateral cease - fire with pro - Russian forces .