"The United States calls on the government of Sudan to cease all chemical weapons use and uphold its obligations under the CWC," the statement read, referring to the Chemical Weapons Convention under which signatories have committed to destroy their stockpiles of the weapons.

The US will cut exports to Sudan and lines of government credit after determining that banned weapons were used.

The United States will impose sanctions on Sudan after determining that its military used chemical weapons against its breakaway paramilitary forces during their civil war, the State Department said.

After years of gradual progress toward stability, a succession battle is pushing the country to the precipice of another full-blown civil war.

Sudan’s army says it may be forced to shut down facilities used to export oil from South Sudan as a result of the war.

CAIRO — Sudan’s military on Tuesday said it took full control of the Greater Khartoum region after a long-running battle against remnants of a paramilitary group in the region’s west and south.

The State Department’s announcement comes months after U.S. officials found evidence that Sudan’s military had used chemical weapons against its paramilitary rival.

The United Kingdom agreed to cede its control over the Chagos Islands to the Republic of Mauritius in an agreement signed between the two countries on Thursday.