Russian leader Vladimir Putin told US President Donald Trump by telephone on Thursday that Moscow will not "give up" on its aims in Ukraine, the Kremlin said. The pair spoke as US-led peace talks on ending the more than three-year-old conflict in Ukraine have stalled and after Washington paused some weapons shipments to Kyiv.

The Kremlin says U.S. President Donald Trump and Russian President Vladimir Putin discussed Iran, Ukraine and other issues by phone, their sixth publicly disclosed chat since Trump returned to the White House.

The Ukrainian foreign ministry called in a top U.S. diplomat in Kyiv to discuss American military aid to the country, after the Trump Administration scrapped a planned weapons shipment because of concerns about its own diminishing stockpiles.