The expansion highlights the growing U.S. counterterrorism cooperation in the region with France.
The United States and France are expanding their military presence in West Africa with a complementary network of small bases to support counterterrorism missions and drone flights.
Maj. Gen. Michael T. Harrison Sr., a former commander of Army forces in Japan, will have to retire as a brigadier general, effectively a demotion that will cost him pension benefits.
U.S. military officials said the cutter, which regularly patrols international waters, approached the vessel.
The locations of the units and aircraft involved are masked to avoid embarrassing partners in the region.
The U.S. has filed a formal complaint over a “dangerous intercept” of a Navy Poseidon P-8 patrol aircraft.
The counterattack is bolstered by U.S. airstrikes in a new phase of the American military mission.
Regina E. Dugan was cited by the Defense Department’s inspector general in a breach-of-ethics case.
But there are still elderly people and children stranded on the mountain, refugees say.
The Pentagon press secretary, said that conditions on the mountain range became clear only after a team of about 20 U.S. Special Forces landed there Wednesday.