Russia postponed nuclear weapons talks with the United States set to take place this week in Cairo, the U.S. State Department said on Monday, with neither side giving a reason for the postponement.

Officials from the two countries were scheduled to meet in the Egyptian capital from November 29 to December 6 to discuss resuming inspections under the New START nuclear arms reduction treaty, which had been suspended in March 2020 because of the COVID-19 pandemic.