What does the US-South Korea nuclear deal mean for the region?

The US and South Korea have signed an agreement to counter nuclear threats from North Korea. China says Washington is provoking confrontation. What does this deal mean for the region? Join host Nastasya Tay. Guests:  Sean O'Malley - Professor of international studies at Dongseo University. Greg Scarlatoiu - Executive director of the Committee for Human Rights in North Korea. Einar Tangen - Senior fellow at the Taihe Institute.