Why did the United States establish a military base in Djibouti after the September 11 attacks?

Following the September 11 attacks in 2001, the United States established a military base in Djibouti to support the global war on terrorism.123

The decision was driven by Djibouti’s highly advantageous strategic location on the northeast coast of the Horn of Africa and the Bab el Mandeb Strait. This position provides a critical vantage point for monitoring and conducting operations aimed at combating terrorism and maritime piracy in the region. The Djiboutian government granted permission for the U.S. presence as part of the broader international effort to prevent further acts of terror.123