North Korea could bolster U.S.-China bond

In this April 3, 2013, photo, South Korean Marine K-55 self-propelled howitzers are on positions during an exercise against possible attacks by North Korea near the border village of Panmunjom in Paju, South Korea. North Korea’s latest outburst of nuclear and military threats has given the U.S. a rare opportunity to build bridges with China _ a potential silver lining to the simmering crisis that could revitalize President Barack Obama's administration’s flagging policy pivot to Asia. (AP Photo/Ahn Young-joon)The crisis gives the U.S. an opportunity to build bridges.