An assault by Taliban insurgents in the heart of Kabul's diplomatic and military enclave ended after 20 hours on Wednesday, when security forces killed the last of six attackers The insurgents were holed up in a multi-storey building still under construction and launched their attack early on Tuesday afternoon, firing rockets towards the U.S. and other embassies and the headquarters of NATO-led foreign forces. The chief of Kabul police, General Ayoub Salangi, described the operation.