Undeterred by international condemnation of its latest nuclear test and a new round of sanctions, North Korea is reportedly preparing to carry out another underground atomic test. Satellite images taken since the regime conducted what it claims was a test of a thermonuclear device at its Punggye-ri proving grounds on September 3 have revealed mining equipment and heavy cargo trucks close to a shaft excavated to the south of the test site. Additional activity has also been confirmed at another underground access point, known as the West Portal. (full story)