A day after a terror attack in his city left three people dead and as many as 40 wounded, London Mayor Sadiq Khan says he has more important things to do than respond to a tweet from Donald Trump Jr.
Wednesday, President Trump's son tweeted, "You have to be kidding me?!" in response Khan's assertion in 2016 to The Independent newspaper that terror attacks are "part and parcel" of living in a major city.
"I'm not going to respond to a tweet from Donald Trump Jr.," Khan told CNN's Christiane Amanpour on Thursday. "I've been doing far more important things over the last 24 hours."