Andriy Parubiy, the secretary of the Ukrainian national security and defense council, allegedly submitted resignation two weeks ago, a Ukrainian online edition reported on Monday. "Parubiy made this decision after he was proposed to announce a new stage of ceasefire in the counter-terrorist operation in eastern Ukraine," ZN.UA said citing an unnamed source. ZN.UA said that Parubiy refused to make this announcement and decided to step down. The secretary's press service said they had no information on his resignation