WASHINGTON, Dec 18 (Reuters) - U.S. Secretary of State Antony Blinken will announce at the United Nations on Thursday additional funding for humanitarian assistance to Sudan and efforts to support civil society in the country, where a conflict has killed tens of thousands of people and driven millions from their homes.

Deputy U.S. Representative to the United Nations Ned Price told reporters on Wednesday that Blinken will make a number of announcements when he chairs on Thursday a UN Security Council meeting on Sudan, which will focus on humanitarian assistance and protection of civilians.

The announcements will include additional funding for humanitarian assistance, and efforts to support civil society and, ultimately, the transition back to democracy, Price said.

"Sudan, unfortunately, has risked becoming a forgotten conflict," Price said.

"So part of the reason the secretary ... opted to convene a signature event on this very topic is to make sure it remains in the spotlight," Price said.

Sudan's army and the paramilitary Rapid Support Forces have been locked in conflict for more than 18 months, triggering a profound humanitarian crisis in which more than 12 million people have been driven from their homes and U.N. agencies have struggled to deliver relief.

The war erupted in April 2023 amid a power struggle between the Sudanese Armed Forces and the RSF ahead of a planned transition to civilian rule.

U.S.-mediated talks in Geneva this year failed to achieve progress toward a ceasefire as the army refused to attend, but did secure promises from the warring parties to improve aid access.

Price said the United States would continue to work with allies for improved humanitarian access in Sudan and ultimately a cessation of hostilities before the end of President Joe Biden's term next month.

"We are going to leave nothing on the field in our efforts to work with allies, with partners, with the Sudanese stakeholders themselves, on the issues that matter most - humanitarian access, the provision of humanitarian assistance, ultimately, the process by which we can work to get to a cessation of hostilities, which is most urgently needed," he said.