The significance of the attack is that three days before the 11th anniversary of the September 11 attacks on the United States, we have seen a young boy carrying out a suicide attack in front of the ISAF base in Kabul, about 50m from the US embassy and about 150m from the presidential palace.
This area is blocked from every side - it has four entrances, all blocked with checkpoints. It is the safest part of Afghanistan - the green zone of green zones, if you will. What is important is how a suicide bomber gets there, 11 years after the invasion. And US President Barack Obama two days ago said that US forces have killed the momentum of the Taliban. I'm not sure what they mean by that if the Taliban are able to carry out a suicide attack 50m from the entrance of the US embassy.
The Taliban are sending a message to the US, to Afghan civilians and to the [former] Northern Alliance: that they can strike anywhere in the country that they choose.
And 11 years later, Afghans are still suffering as much as they were then.
How did we get involved in this?