Images show plumes of black smoke rising into the sky and damaged buildings and cars after two explosions were heard in central Kabul, with Afghanistan on edge after border clashes with Pakistan that began last week. Taliban government spokesman Zabihullah Mujahid said an oil tanker and a generator had exploded, sparking fires in the capital. Violence between Afghanistan and neighbouring Pakistan has flared since two explosions in Kabul last Thursday, and others outside the capital, which Taliban authorities blamed on Islamabad. IMAGES