What is Trump\u2019s brand of disruption doing to US foreign policy? HARDtalk\u2019s Stephen Sackur speaks to Bill Richardson, former Clinton cabinet secretary and one time US North Korea emissary. The next couple of months will present President Donald Trump with foreign policy choices that could define his presidency. A summit meeting with North Korean leader Kim Jong Un is looming, so too a decision on whether to dump the nuclear deal with Iran. And never far from the surface, how to handle relations with Vladimir Putin's Russia.