Earlier this year, when China blasted one of its satellites into thousands of little floating pieces, it was condemned by Washington as a provocative act. But some arms-control experts believe Beijing was baring its teeth to send the White House a different message....

After 50 years of international cooperation and peace in space, the U.S. military insists that it has no plans to usher in an age of space-based warfare. The Pentagon's space-related research is not offensive, officials have told arms control experts and the news...

As Washington's dependence on African oil intensifies, some analysts predict the region will increasingly play host to confrontations between U.S. forces deployed there and various insurgent groups, predominantly Islamic extremists. Currently, African oil accounts for...