U.S. special forces killed 11 ISIS fighters in a firefight on December 6, two months after four Green Berets were killed in a militant ambush.
Mohammed Mahmoud Abu al-Maali, a Mauritanian expert on ISIS and Al-Qaeda in the region, told Newsweek the U.S. military had a destabilizing effect.
A new ISIS video, entitled "Assault of the Brave Against the Army of the Americans," shows the last moments of four Green Berets killed in Niger last year.
Sgt. La David T. Johnson, of Miami Gardens, Florida, was killed in the line of duty in Niger.
Four U.S. Green Berets were killed in the October 4 attack blamed on ISIS-affiliated militants.
Al-Sahrawi has commanded a small group of ISIS-supporting fighters in West Africa since 2015.
More details continue to emerge about the attack that killed four U.S. soldiers.
The video shows armed militants in the vicinity of the attack on October 4.
The ambush that killed four U.S. soldiers is believed to have been perpetrated by a group known as ISIS in the Greater Sahara.
"Every time I hear people compare this to Benghazi, it makes me physically sick,” Oklahoma Senator James Inhofe said.
The Florida congresswoman struck back at General John Kelly calling her an "empty barrel," saying the attack is racist.
"The president opened this door," Fox News anchor Bret Baier said.
Militant groups including ISIS and Al-Qaeda are active across Africa.
The U.S. soldiers were on a training mission with allies from Niger.