The United States is among the world&#039s leaders in homeland defense; our efforts to strengthen our security continue unabated every day. However, as we continue to bolster our defenses, we need to continue to monitor and counter the changing threat of international terrorism, which is forcing us to expand the scope of our homeland defense. With the rapid changes occurring in the domestic and international environment, we must develop an “active defense” outside the United States, to guard against threats emanating from overseas and to protect American citizens and assets abroad. Without this expansion in scope, even the best domestic homeland defense-a “Fortress America”-leaves the United States and its citizens vulnerable. Full Story