The war erupted in April 2023 amid a power struggle between the Sudanese Armed Forces and the Rapid Support Forces.
In November Russia vetoed a UN Security Council draft resolution calling on warring parties to immediately cease hostilities.
The United States accused Russia at the United Nations on Monday of funding the two warring parties in Sudan, an apparent step up from Washington's previous assertion that Moscow was playing both sides of the conflict to advance its political objectives.
The war erupted in April 2023 amid a power struggle between the Sudanese Armed Forces and the paramilitary Rapid Support Forces (RSF) ahead of a planned transition to civilian rule, triggering the world's largest displacement and hunger crisis.