Trump scrapping Iran deal was "diplomatic vandalism"

President Donald Trump abandoned the Iran nuclear deal to spite Barack Obama, according to a leaked memo written by the UK's former ambassador to the US Sir Kim Darroch. Weekend speaks to former UK foreign secretary Jack Straw on the art of diplomacy in the age of Trump.

Also in the programme: New York City goes dark; and the recent history of illegal migrant crossings in the Mediterranean.

(Photo: Former US President Barack Obama in Washington, DC on 5th August 2015, to deliver remarks on the nuclear deal reached with Iran. Credit: Jim Watson/AFP/Getty Images)