Foreign policy has played a vital role in supporting international climate negotiations by reaching out to partner countries bilaterally and making the case for more ambitious climate action. The Paris Agreement is certainly a game changer for climate diplomacy. This does not mean, however, a break for climate action and also diplomats. To ensure that Paris will be a sustainable success, active engagement is required to fully implement the INDCs and to ratchet up ambition in the coming years. Catalyzing the climate economy will be the key to accelerate the path towards a much-needed climate-friendly trajectory.