Aus Preview News Today

The president says nuclear terrorism is the most immediate threat to global security. can he and the other leaders come up with action plans? julie kirtz gives aus preview of the summit from the white house. this is the largest gathering of world leaders hosted by an american president since 1945, the founding of the u.n. as you said, the focus of this two-day summit is on one thing -- securing nuclear materials, keeping nuclear material and weapons out of the happens of terrorists and smuggle...