President of Ukraine Petro Poroshenko met with NATO Secretary General Jens Stoltenberg in Lviv on Monday.

"Together they went to International Center for Peacemaking and Security, where they will take part in the opening ceremony of the international exercises 'Ukraine 2015' practicing the cleanup of emergency situations as a part of The Partnership for Peace Program," the president's press service reported on Monday.

President's press service previously reported that Stoltenberg would visit Ukraine on September 21-22 at the invitation of Poroshenko.