Retired General Jack Keane on Recent Bombing In Kabul, Afghanistan

War Zone! A massive blast tore through the diplomatic quarter of the Afghan capital Wednesday, killing at least 90 people and wounding more than 400, officials said. The devastation left Kabul in shock and underlined the country's security struggles as it confronts a sustained wave of insurgent and terrorist attacks. Interior Ministry officials said a huge quantity of explosives, hidden in a water tanker, detonated at 8:30 a.m. during rush hour on a busy boulevard in the Wazir Akbar Khan district, which houses embassies, banks, supermarkets and government ministries. An entire city block was ravaged, with office buildings left in rubble and charred vehicles strewn across the road in one of the deadliest single attacks in Kabul. The scenes of human horror were appalling, even for a country accustomed to war and violence.

Retired General Jack Keane weighs in.