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.

The global financial crisis prompted Congress to press for stronger U.S. financial regulations. But experts debate what level of government involvement will help the economy long term.

Chechnya has been plagued by two wars and an ongoing insurgency since the fall of the Soviet Union. In recent years, Chechen militants have escalated attacks in the North Caucasus and revived bombings in Moscow.

Some analysts say healthcare costs hinder U.S. industry competitiveness in the global marketplace, but it's unclear whether proposed health reforms will offer any cost relief.

The U.S. State Department continues to list Cuba as a state sponsor of terror, though most experts say the country no longer poses a threat to U.S. national security.

The provisional Irish Republican Army, or IRA, is an outgrowth of an older group known as the Irish Republican Army, which fought an insurgency that successfully challenged British rule in the whole of Ireland in the early years of the twentieth century.

Iran's nuclear program is believed to have steadily progressed, despite sharply increased concerns over its intentions and sanctions over its lack of transparency.

The Obama administration says its 2009 stimulus package saved jobs and boosted growth, but Republicans and some economists worry it dampened consumer and business spending and added to long-term debt.

Debating global warming policy has moved to the top of agendas worldwide, but some skeptics still question whether action is necessary or possible.

Outsourcing remains a contentious political issue as lawmakers, analysts, and business leaders debate its effect on U.S. job creation and the role of corporate tax policy in shipping jobs overseas, explains this Backgrounder.