"The announcement is, of course, completely non-constructive; everyone's waiting for the settlement of the situation and not the implementation of martial law," Nebenzya said.
Poroshenko said during a press conference on Monday that Kiev was ready to impose martial law in the country's east should the peace process be interrupted.
"The threat of imposing military actions doesn't help in instigating dialogue and may undermine the peace process," Nebenzya added.
The current Ukrainian crisis escalated in mid-April when Kiev launched a military operation to suppress the independence supporters of Luhansk and Donetsk regions who refused to recognize the coup-imposed central government.
A much-awaited ceasefire agreement, brokered by Russia and the Organization for Security and Co-operation in Europe, was signed between the conflicting sides in September. Following the implementation of the ceasefire, both Kiev and the DPR and LPR authorities have repeatedly accused each other of violating the truce. The leaders of both breakaway republics have claimed that Kiev is using the ceasefire to prepare a new attack.
