A string of bomb, rocket and gun attacks in Afghanistan in the last two days alone has killed 12 NATO personnel.
And, worryingly, some attacks are originating on the inside.
The international force is due to step up its campaign against the Taliban ahead of a gradual withdrawal starting next year.
It comes as a major manhunt gets underway for the rogue Afghan soldier who shot three UK soldiers dead on a base in Helmand.
Standing shoulder to shoulder with the Afghan army and police chiefs, the British army commander said his troops would stay focused.
Some 45 ISAF personnel have been killed so far this month.
UK Prime Minister David Cameron promised a thorough investigation.
He said: “There’s nothing you can say to parents who lost a child, that will help restore the sense of grief and loss. There’s nothing you can do. But it is important they get the information to try and help achieve some sort of closure on what happened.”
Support for the Afghan conflict is faltering, as military funerals become a common occurrence in the UK.
Cameron has said he would like to see combat troops withdraw within five years.