Energy traders weighing the probability of a revived nuclear accord between Iran and world powers might do better to train their gaze on Beijing rather than negotiations in Vienna.

That’s the conclusion reached by top security analysts using game theory to forecast the next moves in the star-crossed talks.

Calculating whether the U.S. and Iran will agree to rejoin the 2015 agreement, which limits Iran’s atomic work in exchange for sanctions relief, is key for oil markets facing tightening global supply. Nuclear talks have been frozen since the election of conservative cleric Ebrahim Raisi to the Iranian presidency in June but efforts resumed this week to find a way back to the negotiating table.