President Petro Poroshenko of Ukraine | Brendan Hoffman/Getty Images Trump pledges to ‘restore peace’ along Ukraine-Russia border US president had ‘a very good call’ with Ukrainian President Petro Poroshenko.

President Donald Trump on Saturday told Ukrainian President Petro Poroshenko that the U.S. will work with Ukraine and Russia to "restore peace along the border," according to a readout released by the White House.

"We will work with Ukraine, Russia, and all other parties involved to help them restore peace along the border," Trump said during the 5 p.m. call on Saturday, which was described as "a very good call."

On Thursday, Trump promised former Ukrainian Prime Minister Yulia Tymoshenko that the United States would not lift sanctions from Russia until it pulls out of Ukraine, according to a POLITICO report. Trump has suggested during the election that he would be willing to ease Russian sanctions.

Trump also spoke with Italian Prime Minister Paolo Gentiloni on Saturday, where the two leaders discussed Libya, refugees fleeing to Europe and the upcoming G-7 meeting in Italy, which Trump said he would be attending.

According to a readout sent by the White House, Trump "reiterated the U.S. commitment to NATO and emphasized the importance of all NATO allies sharing the monetary burden of defense spending." The two leaders also "agreed to continue close coordination and cooperation on efforts to eliminate ISIl and other terrorist organizations."

Trump has in the past criticized NATO, describing it as "obsolete" in an interview with the New York Times.