ASTANA, July 1 – President Petro Poroshenko has urged Kazakh President Nursultan Nazarbayev to mediate Ukraine's dispute with Russia, the Kazakh presidential press service reported.

"Petro Poroshenko strongly urged Nursultan Nazarbayev to continue his mediating activity in resolving the crisis," the press service said.

The conversation was arranged at Ukraine's initiative.

It was reported earlier with reference to the Ukrainian presidential website that Poroshenko and Nazarbayev had discussed more active trade and economic cooperation between the two countries.