By Daphne Psaledakis, David Lewis and Nafisa Eltahir WASHINGTON/NAIROBI/CAIRO (Reuters) -The United States determined on Tuesday that members of Sudan's Rapid Support Forces (RSF) and allied militias committed genocide in Sudan and imposed sanctions on the group's leader over a conflict that has killed tens of thousands of people and driven millions from their homes.

Antony Blinken, the U.S. Secretary of State, has formally accused the Sudanese Rapid Support Forces (RSF) of genocide, alleging that they have been killing civilians from specific ethnic groups. Sanctions were also imposed on the RSF leader,

The US has accused the Sudanese paramilitary Rapid Support Forces (RSF) of committing genocide and imposed sanctions on its leader. US Secretary of State Antony Blinken on Tuesday said Mohamed Hamdan Dagalo, also known as Hemedti, was being punished for his role in "systematic" atrocities against the Sudanese people during the 20-month conflict.