Operation Enduring Freedom – Horn of Africa (OEF-HOA) is the United States military operation to combat militant Islamism and piracy in the Horn of Africa.[14] It is one component of Operation Enduring Freedom (OEF), which includes eight African states stretching from the far northeast of the continent to the oil-rich Gulf of Guinea in the west.[15] The other OEF mission in Africa is known as Operation Enduring Freedom – Trans Sahara (OEF-TS), which, until the creation of the new United States Africa Command, was run from the United States European Command.[14]