Iran defiant after Trump speech and the search for missing US airman

Iranian officials have warned the US and Israel of “crushing, broader, and more destructive” attacks following President Trump's national address where he said America is close to achieving its core military objectives.The Economist's Middle East Correspondent Gregg Carlstrom joins Saturday Extra from Dubai to discuss the latest in the conflict - including the downing of US fighter jet in southern Iran, the reaction from Gulf states to President Trump's speech  and ongoing Iranian attacks on Gulf infrastructure.