The world must return to a policy of "maximum pressure" against Iran to turn it into a more democratic country, U.S. President-elect Donald Trump's incoming Ukraine envoy Keith Kellogg told an Iranian opposition event in Paris on Saturday. Trump has vowed to return to the policy he pursued in his previous term that sought to wreck Iran's economy to force the country to negotiate a deal on its nuclear programme, ballistic missile programme and regional activities. "These pressures are not just kinetic, just not military force, but they must be economic and diplomatic as well", Retired Lieutenant-General Kellogg, who is...