Ukrainian President Petro Poroshenko has assured U.S. President-elect Donald Trump of readiness to work with his administration and to further strengthen Ukraine-U.S. strategic partnership.

"The President of Ukraine congratulated the President-elect on winning the presidential election and emphasized readiness to work with Trump's administration and to further strengthen the Ukraine-U.S. strategic partnership," the Ukrainian presidential press service said in a report on a phone conversation between Poroshenko and Trump.

They agreed to maintain contacts, including to hold a bilateral meeting, it said.

Poroshenko invited Trump to visit Ukraine "at his earliest convenience."