The roles and missions of Marines in U.S. national security.

Cross border fire between Israel and Gaza militants continues overnight despite truce; an Israeli airstrike kills two militants after gunmen launched barrage into southern Israel.

One of Muammar Gaddafi's sons is thought to be headed to Niger. Julie Noce reports.

Iraqi prime minister al-Maliki, says that the Saddam Hussein's Baath party will find no security vacuum to exploit after U.S. forces leave. Deborah Lutterbeck reports.

The US Air Force flies 25 wounded Libyan fighters to the United States for medical treatment at the request of the National Transitional Council.

The Syrian government is attacking civilians again to try to discourage them from protesting.

Intelligence Committee Chair Rep. Mike Rogers and David Sanger discuss the Iranian plot to assasinate the Saudi Ambassador to the United States.

As Syrian president warns against foreign intervention in Syria, we ask if it is a threat and what does he really mean?

NATO forces in Afghanistan have seen an increase in attacks originating from the south of the country as the Taliban claims to have more constant, detailed information on the whereabouts of international forces in Kabul.

There are hopes for a ceasefire between Palestinian militants in Gaza and Israel after the Islamic Jihad group accepted an Egyptian-brokered truce.

Kyrgyzstan is going to the polls to vote for a new president.

Former FBI Director Louis Freeh weighs in on U.S. grand strategy.