This Inquiry has now been running for years, at a cost of tens of millions of pounds, with no clear end in sight.
The allegations it is examining are exceptionally serious. If wrongdoing is established, no member of our Armed Forces is above the law. But neither should scrutiny become an open-ended process whose duration and demands impose their own punishment on those who serve.
We also cannot ignore the cumulative effect this has on our Special Forces — on serving personnel, veterans, morale and ultimately operational effectiveness. These are nationally critical capabilities.
Parliament has rightly given the independent Inquiry the space to do its work. But independence cannot mean an absence of accountability for time, cost and proportionality.
With the latest disclosure problems threatening yet further delay, I believe the time has come for Parliament to start asking some searching questions.
Latest on Afghan inquiry:
An "exceptional" open hearing has been held today after it emerged this week that the Ministry of Defence has found 97 million new documents, some of which could be relevant to the inquiry, raising concern it could be delayed further.
The inquiry's chair Haddon-Cave sought reassurances from the MoD that “any material of real relevance is quickly identified and disclosed” and that it would not happen again.
Haddon-Cave said "it would not be fair to all those awaiting answers", including veterans, serving members of the military, their families, and the public if the inquiry was to be held up further because of Ministry of Defence failures.
He said of the inquiry: "This is not about split second decisions taken in the heat of combat, this is not about the fog of war. This is about whether there was a practice of unlawful killings by British special forces in Afghanistan.
"It will be recalled that the allegations of unlawful killings originated from within special forces themselves."