- The document would also renew for a year sanctions imposed on South Sudan.
- In the Security Council several countries, including Russia, China, and Ethiopia, are not keen to strengthen the sanctions.
- They do not want to jeopardise mediation led by the East African regional organisation IGAD.
The UN Security Council is expected to vote this week on imposing an arms embargo against South Sudan, a US proposal which follows a power-sharing agreement between warring leaders.
The United States is South Sudan's biggest aid provider, and was a major backer of its 2011 independence from Sudan.
But patience from South Sudan's foreign allies has worn out after countless failed efforts to bring peace to the country, now in its fifth year of a war where targeted ethnic killings, gang rapes and other atrocities have occurred.
An early draft resolution, seen Tuesday by AFP, underlines "a deep concern" of the Security Council "in the face of the failure of South Sudanese leaders to end hostilities and flagrant violations."
The draft US text would establish an arms embargo for South Sudan until May 31, 2019.