At least 13 militants were killed in a clash with security forces following arrest of five burqa-clad Arabs, one Afghan national and a local man in Mohmand Agency on Tuesday. Four of the five Arabs are Saudi nationals — Ahmed, Ali, Mohammad and Obaidullah — and one Libyan national, Abdullah. The Afghan national has been identified as Habibullah and the local man as Shad Ali. They were detained at the Khapakh checkpost. The Afghan was living in Chakdara area of Lower Dir. When troops were taking the detained men to Ghalanai, about 60 militants attacked them in an area between...