Good morning and welcome to the Sunday edition of Morning Wire, where we give you the weekend rundown to get ready for the week ahead. Today, Iran's foreign minister returns to Pakistan as leaders seek to revive Iran-U.S. talks; more countries are turning to nuclear power 40 years after the Chernobyl disaster; and Sabastian Sawe of Kenya becomes the first person to run a marathon in under two hours.
But first, what we know about the attack at the White House correspondents’ dinner.