KIEV, Nov. 15 - U.S. President-elect Donald Trump spoke to Ukrainian President Petro Poroshenko, whose country continues to grapple with Russian occupation and annexation of its territory, Politico reported Tuesday.

The call comes just days after Trump spoke to Russian President Vladimir Putin.

According to a Ukrainian government readout of the call, Poroshenko stressed the "need for the Washington’s resolute support of Ukraine in countering the Russian aggression and implementing crucial reforms." He also invited Trump to visit and the two agreed to hold a bilateral meeting.

Trump's closeness to Putin became campaign fodder for Democrats, who consistently emphasized how leaders like Poroshenko might be left without a steady ally. For his part, Trump seemed not to know whether Ukraine had been actually invaded. Russian-backed troops seized Crimea, a peninsula in southeastern Ukraine, in February 2014, and the territory was annexed a month later.

"He's not going into Ukraine, OK, just so you understand," Trump said in an interview on Sunday with ABC's George Stephanopoulos on "This Week" in August. "He's not going to go into Ukraine, all right? You can mark it down. You can put it down. You can take it anywhere you want."

Trump went on to tell Stephanopoulos that the invasion was another example how much of a "mess" the world is under President Barack Obama.

On Monday, Trump spoke with Putin on the phone. According to the Kremlin's account of the call, the two leaders agreed to normalize relations and promote stronger economic ties.

Arizona Sen. John McCain, one of the Senate's leading Russia hawks, warned Trump on Tuesday against cozying up to Putin.

“With the U.S. presidential transition underway, Vladimir Putin has said in recent days that he wants to improve relations with the United States," McCain said. "We should place as much faith in such statements as any other made by a former KGB agent who has plunged his country into tyranny, murdered his political opponents, invaded his neighbors, threatened America’s allies and attempted to undermine America’s elections." (po/ez)