What Has Made Negotiations with North Korea Over Its WMD

Multiple Choice

What has made negotiations with North Korea over its WMD programs difficult?

A) The leadership of North Korea is irrational.
B) North Korea refuses to make any concessions.
C) Other states are generally not interested in North Korea,due to its poverty.
D) The demands made by other states have been unclear to North Korea.
E) North Korea is unwilling to lose the security that comes with nuclear weapons.