After the Soviet Union collapsed in the early 1990""s the U.S. became the only superpower in the world. No nation spends even half as much as we spend on our military. We have military satellites that watch the entire world. U.S. satellites are so powerful they can read the logo on a golf ball. The U.S. has atomic submarines that silently travel the depths of the ocean. They have the capacity to fire missiles to any part of the globe. The U.S. has new unmanned aerial drones that spy on other nations and can drop weapons. The U.S. has the most technological advanced fighter jets and helicopters that are invisible to radar. They have top special-ops teams that are the best trained in the world. The U.S. is so powerful that many people criticize it as too powerful. Many nations accuse the U.S. of being too involved in other nations"" problems. There is enormous controversy around the world about America""s role as the ""police"" of the world. The United States must find a difficult balance between defending its interests and values and intervening too heavily in other countries."