A suicide bomber struck outside the gates of a district court in Islamabad on Tuesday, detonating his explosives next to a police car and killing 12 people, Pakistan’s interior minister said. The attack was the latest in an uptick of violence across the country.No group immediately claimed responsibility for the explosion, which also wounded at least 27 people, but Pakistan has struggled over the past months with a resurgent Pakistani Taliban.The blast, which was heard miles away, came at a...