The latest meeting between Russian and U.S. delegations on ending the war in Ukraine has begun at the Ritz-Carlton hotel in Riyadh, Saudi Arabia.

The United States has begun separate meetings with delegations from Ukraine and Russia in Saudi Arabia as the administration of President Donald Trump pushes to broker a peace agreement between the two countries.

Talks in Riyadh between Ukrainian and US officials, part of an effort to end Russia’s three-year invasion of its neighbor, started on Sunday afternoon, Ukraine’s defense minister said. The discussions are expected to be followed on Monday by a meeting between the US and Russia.