The economic climate and border security concerns have fueled the immigration debate in the U.S. congressional elections. This Backgrounder examines races where immigration is playing a role and the …

The United States has pursued missile defense technologies for six decades, with mixed results. Changes under the Obama administration, including adjustments to planned defenses in Europe, could port…

The anti-American cleric Muqtada al-Sadr, virtually unknown before the collapse of Saddam Hussein’s government, has leveraged his family name to become one of the most influential Shiite leaders in m…

Backgrounder: The new Congress shares President Bush’s reform approach but new legislation is by no means assured.

Though shifts in demand and reduced production by some major producers have influenced oil prices, investor behavior is also increasing market volatility.