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 potential for reform legislation in the next Congress.

With U.S. unemployment and high debt threatening Americans at home and U.S. power abroad, this Backgrounder looks at congressional candidates' difficulty in articulating policies that balance job creation and debt reduction.

A possible transfer of political power in the congressional midterm elections could doom short-term chances for a comprehensive climate bill. But experts say climate issues could still be addressed through bills focused on clean energy.

Experts say instability in south Sudan should be looked at in tandem with the crisis in Darfur, and some call for addressing Sudan's problems in a more unified way to help forestall an escalation of violence.

An increase in terror incidents involving Islamic radicals who are U.S. citizens is vexing law enforcement officials and posing new questions about the roots of their radicalization.

With U.S. economic recovery still slow, trade policy looms as a factor in the congressional midterm races. This Backgrounder explores the consequences for trade based on the outcome of the Democratic-Republican electoral struggle.

Summaries and links to the seminal United Nations Security Council and General Assembly resolutions for the post-colonial period, focusing on those related to the Arab-Israeli conflict in the Middle East.

A profile of the UN's senior leadership position--the organization's secretary-general. What tasks are incumbent on the official, and how have past secretary-generals interpreted the role?

Gross domestic product has been the dominant measure of economic strength for decades, but some experts question whether the metric alone is a sufficient tool for measuring overall societal wellbeing.

The growth and strengthening of Afghanistan's domestic security forces is seen as key to an eventual U.S. exit, but some analysts caution that progress will remain slow.

A profile of Hassan Nasrallah, the secretary-general of Hezbollah.

The reliance on unmanned drones to target terror suspects in Pakistan has been quietly lauded by U.S. officials. But the covert program, which has so far gotten little public scrutiny, is facing mounting legal and ethical concerns.

A profile of the Lebanese terrorist organization.

As the United States and India move toward cementing their warmest relationship ever, India's rival, Pakistan, is broadening its ties with its own powerful ally: China.

The Obama administration sees the Organization of the Islamic Conference as a venue through which to court Muslims globally, but the group's controversial positions on some issues could pose problems.

The G20 meetings in Toronto will be marked by competing agendas on global growth and financial regulations. This Backgrounder looks at the range of policy concerns.

The Review Conference of the Nuclear Nonproliferation Treaty gets underway amid new concerns about Iran and North Korea and disputes between nuclear haves and have-nots. Fifteen countries will play a special role in the debate.

The countries outside of the Nuclear Nonproliferation Treaty--North Korea, Pakistan, India, and Israel--present a significant challenge for U.S. diplomacy and efforts to restrain the spread of nuclear weapons, experts say.

Pakistan's constitution continues to be the focus of political struggle, with the nation's prime minister, president, regional governments, and army vying for advantage.