Published March 27, 2012, 12:00 AM
U.S. President Barack Obama, center, speaks to Chilean President Sebastian Pinera
U.S. President Barack Obama, center, speaks to Chilean President Sebastian Pinera prior to a group photo session at the Nuclear Security Summit in Seoul, South Korea, Tuesday, March 27, 2012. (AP Photo/Pablo Martinez Monsivais)
Read the article: South Korea summit seeks to deter nuclear-armed terrorism
