Lt. Raj Bansal and Capt. Joseph Shannon (right) approach Foxtrot-01, a remote nuclear missile base in Nebraska. Geoffrey Brumfiel/NPR hide caption
nuclear weapons nuclear weapons
First Lt. Patrick Romanofski (center) and 2nd Lt. Andrew Beckner (left) practice the launch of nuclear weapons. Promotions are now more strongly influenced by hands-on performance in this simulator. R.J. Oriez/U.S. Air Force hide caption
Anti-nuclear activists (from left) Gregory Boertje-Obed, Sister Megan Rice and Michael Walli, pictured Feb. 6 in Knoxville, Tenn., were sentenced to prison terms on Tuesday for the 2012 break-in at Y-12 National Security Complex in Oak Ridge. Linda Davidson/The Washington Post/Getty Images hide caption
The National Ignition Facility's 192 laser beams focus onto a tiny target. LLNL hide caption
Negotiators at their round table in Geneva, where talks are being held about Iran's nuclear ambitions. Denis Balibouse /Reuters/Landov hide caption
The negotiating table in Almaty, Kazakhstan, where the U.S. and other nations are talking with Iran about that nation's nuclear ambitions. Ilyas Omarov /AFP/Getty Images hide caption
North Korean leader Kim Jong Un. Kyodo /Landov hide caption
U.S. Secretary of Defense Leon Panetta is given a traditional Maori welcome onto the grounds of the Government House on Friday in Auckland, New Zealand. Phil Walter/Getty Images hide caption
International Atomic Energy Agency Director-General Yukiya Amano earlier today in Vienna, after his return from talks in Tehran. Dieter Nagl /AFP/Getty Images hide caption
Word Of Deal To Inspect Iran's Nuclear Program Raises Hopes For Broader Talks
April 2010: Iranian President Mahmoud Ahmadinejad unveils a sample of the third generation centrifuge for uranium enrichment during a ceremony in Tehran on April 9, 2010. Iran says its nuclear ambitions are peaceful. Behrouz Mehri/AFP/Getty Images hide caption