The United States is headed for a showdown with Russia and China this week over competing international treaties, one banning the production of nuclear materials and the other trying to prevent an arms race in space.
China and Russia are developing space weapons and are among several nations working on systems to threaten U.S. satellites with lasers or missiles, says the director of the Defense Intelligence Agency.
Missile defense proponents view North Korea's firing of seven missiles as the first real test of the new U.S. ground-based missile defense, even though the failure of the long-range Taepodong-2 seconds after launch prevented the Pentagon from responding with a U.S.-based interceptor.
U.S. and international programs to defeat al Qaeda have limited the terrorist group's ability to acquire weapons of mass destruction, the No. 2 U.S. intelligence official said.
Commercial satellite photos made public recently provide a new look at China's nuclear forces and bases images that include the first view of a secret underwater submarine tunnel. A Pentagon official said the photograph of the tunnel entrance reveals for the first time a key element of China's hidden military buildup.
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The U.S. is preparing to reverse course on cooperating with China in the area of space technology. Critics worry that this move could inadvertently assist China's military space program.
The author, chairman of the U.S. House Permanent Select Committee on Intelligence, suggests that the U.S. should declassify the bulk of documents seized in Iraq and allow the 'open source' community to assist the government in translating them.
The United States is highly vulnerable to attack from electronic pulses caused by a nuclear blast in space, according to a new book on threats to U.S. security.
The U.S. military is bracing for future attacks in space, and the Air Force has deployed an electronic-warfare unit capable of jamming enemy satellites, the general in charge of space defenses says.
China is preparing for nuclear war with the United States over Taiwan, and a conflict is likely in the near future because of divisions among Beijing's leaders, a Chinese democracy activist says.