A suicide bomber blew himself up next to several Afghan border policemen in eastern Afghanistan, leaving at least seven officers and one civilian dead, while six suspected Taliban were killed in the south, officials said. The explosion happened as the bomber tried to enter the border police base in Khost province on Saturday, said Gen. Qasim Kheil, a border police commander. Six officers also were wounded in the blast, he said. The attack happened as fighting between militants and foreign and Afghan forces appears to be intensifying after the usual winter lull. Troops called in an airstrike on an observation site used by the Taliban, which left six militants dead, the statement said.