A group of diplomats travelling in north-western Pakistan was targeted with a remote-controlled bomb, killing a policeman escorting the group, officials said on Sunday. The incident took place in the Swat district of Khyber Pakhtunkhwa amid an uptick in militant attacks in the country. Four people were wounded in the explosion, but “all members of the diplomatic corps have returned safely to Islamabad,” the Foreign Ministry said in a statement. District police told media that the explosion was caused by a remote-controlled improvised explosive device (IED). No group has claimed responsibility …