Perspectives on the fast and dramatic transformation of the Arctic.

Amb. Zalmay Khalilzad, discusses democracy promotion in the Middle East following the Arab Spring with Mark Lagon.

Former IMF chief Dominique Strauss-Kahn told police he had diplomatic immunity, court papers show.

Ash from an erupting volcano continues to disrupt life in parts of Argentina.

UN Secretary General Ban Ki-moon has urged Syria to halt the bloodshed and "stop killing people".

The uprising in Yemen has been hijacked by a bloody power struggle between the ruling Saleh family and another family from the same tribe.

Amateur video of the tsunami that hit Japan in March shows people running as cars, boats and debris wash inland after the massive earthquake (June 16)

Osama bin Laden's longtime second-in-command, Ayman al-Zawahri, has taken control of al-Qaida, the group declared Thursday, marking the ascendancy of a man driven by hatred of the United States who helped plan the 9/11 attacks.

Swathes of settlements on Syria's northern border now appear to be little more than ghost towns.

The euro slips as Asian markets unsure that Greece can dodge a default bullet.

Violent street protests over budget cuts in Greece sparked discussion of the current and future state of the U.S. economy. Business and economics correspondent Rebecca Jarvis speaks to Erica Hill about the economic impact of U.S. debt.

In response to the strained U.S.-Pakistan relations, Defense Secretary Robert Gates told Sen. Patrick Leahy that most governments lie to each other. Jeff Glor reports on the hearing on Capitol Hill.

Questions circulate over who'll assume power in the country, and what it means for U.S. national security.

Jon Huntsman recently shared pointed views on an exit strategy in Afghanistan and how that will serve him in the campaign.