China negotiations driven by economic need , desire for survival , experts say . North Korea , embarrassed by nuclear test , has prodded North Korea 's , expert says . the Center for Strategic and International Studies ' possible , experts say , but nation 's best interest is to be on West 's good side .
North Korea 's negotiations driven by economic need , desire for survival , experts say . China , embarrassed by nuclear test , has prodded North Korea , expert says . Deceit possible , experts say , but nation 's best interest is to be on West 's good side .