According to the message, Poroshenko and Merkel coordinated the positions before the meeting of the German Chancellor and Russian President Putin on August 18.
Also, the leaders discussed the situation in Donbas and further efforts for the provision of the progress in the peaceful settlement of the conflict.
During the talk, Poroshenko put special attention to the release of the Ukrainian prisoners and political prisoners illegally detained at the temporarily occupied territories in Russia, particularly Oleg Sentsov.
Poroshenko and Merkel have discussed the security issues connected with the construction of the Nord Stream 2 gas pipeline and agreed on the schedule of the next contacts within the development of the bilateral dialogue.
As is known, the native of Crimea, film director and political activist, Sentsov has been serving time in the Russian penal colony in Labytnangi since May 2014. This spring, he announced a hunger strike, demanding to release all Ukrainian political prisoners, illegally held by the Kremlin.
Oleg Sentsov was illegally detained in Crimea in 2014, then taken to Russia. They judged him and sentenced him to 20 years of imprisonment at a high-security penal colony. The prosecutors charged Sentsov with preparing terrorist acts in the occupied Crimea. Sentsov denies his guilt. Ukraine's government, common citizens and the international society - politicians, artists, public figures - urge the Kremlin to release him.
Sentsov enjoys the wide support of the many in Ukraine and abroad. Rallies, where participants urge to release him, are held worldwide - in Ukraine, Russia, the EU and the U.S.