A leading Chinese expert reiterated his stance that it's a given that North Korea will soon conduct a fourth nuclear test and that resuming the 6-party talks remains the only viable alternative.Speaking to reporters on the standstill of inter-Korean relations Yang Xiyu of the China Institute of International Studies says North Korea has decided it would push through any technical or diplomatic roadblocks to achieve its fourth, fifth and even sixth nuclear tests.He added that from Pyongyang's perspective stopping the program now, would mean all of its investments would go to waste and that continuing it would be a means to guarantee survival of the regime, in the eyes of its own people.Though unproductive for over 10 years, the six-party talks, Yang says, should resume.