What this is an important US military capability according to joint doctrine on foreign internal defense?

According to joint doctrine on foreign internal defense, an important U.S. military capability is the ability to assist and advise foreign security forces to enhance their effectiveness in countering internal threats. This capability fosters stability, promotes good governance, and helps build partner capacity, which is essential for preventing the spread of extremism and ensuring regional security. By working closely with local forces, the U.S. can facilitate sustainable security solutions that address the root causes of conflict.