President of Ukraine Petro Poroshenko and Vice President of the USA Joe Biden agreed to coordinate efforts in the remaining time before the expiry of the ceasefire for ensuring a full-fledged realization of the peace plan.

It was said during their telephone talk, the press service of the President of Ukraine disclosed to UNIAN.

Biden also expressed condolences due to death of 9 Ukrainian military men in a result of the firing at helicopter near Slaviansk.