NATO 's chief meets with the heads of NATO countries in Brussels . Rebels : Open to ceasefire with ' Ukraine is bolstering its military partnership with NATO , Poroshenko says . He says he 's ` ` ready ... to stop the war , '' hopes talks with rebels lead to peace . NATO 's chief cautions that earlier Moscow 's remarks on Ukraine went nowhere .
NATO 's chief meets with the heads of NATO countries in Brussels . Ukraine is bolstering its military partnership with NATO , Poroshenko says . He says he 's ` ` ready ... to stop the war , '' hopes talks with rebels lead to peace . NATO 's chief cautions that earlier Moscow 's remarks on Ukraine went nowhere .