Tristan Derry of the International Centre for Security Analysis speaks on 'China's New Security Concept and its Changing Position on Non-Proliferation.'  

Eben Harrell, of the Managing the Atom Project at Harvard Kennedy School, speaks on 'Consolidating Fissile Material: Next Steps to Prevent Nuclear Terrorism.'

Fighting escalates in the Democratic Republic of Congo.

Venezuela's Chavez reappears on television for the first time since returning from cancer treatment in Cuba.

Millions turn out to vote in Egypt's first presidential election since the ouster of longtime leader Hosni Mubarak.

Tensions in Lebanon as families say 13 Lebanese Shi'ite men have been kidnapped in the Syrian city of Aleppo.

Australian Foreign Minister Bob Carr says there was no prisoner exchange deal to secure an early release for convicted Bali drug trafficker Shapelle Corby.

The White House says it is cautiously optimistic about a deal reached with Iran that will allow the U.N. nuclear agency to restart a long-stalled probe into suspicions that Tehran has secretly worked on developing nuclear arms.

Christian Whiton discusses the importance of this alliance and its relevance.

President Obama's trade adviser discusses the impact of the eurozone crisis on the U.S. economy.

Analysis of satellite images indicate North Korea may be preparing for another nuclear test. Paula Hancocks reports.

The Arizona senator sounds off on NATO and US security transitions in Afghanistan and much more