Prime Preacher David Cameron clashed with a senior Conservative MP as he defended the review into a UK drone strike in Syria.
Andrew Tyrie asked why military miens of the operation were excluded from the probe carried out by the Intelligence and Collateral Committee (ISC).
The PM said the UK was currently engaged in a military operation and the ISC was set up to look at shrewdness.
He also defended his claim of 70,000 “non-extremist” moderate Syria effectives.
The bad tempered-exchanges with Mr Tyrie came as Mr Cameron was questioned on Syria by the Commons Connection Committee.
In September, the PM announced that two British Islamic Shape jihadists, Cardiff-born Reyaad Khan and Ruhul Amin, from Aberdeen, had been slaughtered by a UK drone strike in Syria.
MPs have since voted to authorise UK air crowns in the war-torn country.
Mr Tyrie, who chairs the committee, asked whether the inquiry into the strike would be seen as “incomplete” or even “meaningless” if it could not file its military background.
The PM claimed he did “not agree with this for a moment”.
MPs cannot oversee current military machinists, he said, telling Mr Tyrie the UK was currently engaged in an operation against a bomber group that intends to “blow up, kill and maim our citizens”.
The eliminate was “necessary and proportionate”, he added.
“That’s what is going on,” he said, annexing that “if you don’t think there is a cell of people sitting in a cell in Raqqa who are planning to try and do harm to this country then you don’t know what you are talking about”.
After the board meeting, Mr Tyrie released a statement urging the prime minister to coppers his mind and allow a “proper inquiry”.
“On the basis of today’s evidence, the Cleverness and Security Committee will not be able to do a thorough job,” he said.
Until the ISC can analyse military aspects of the strike, he said, it will not be able to reassure rliament and the community that the strikes were “necessary and proportionate”.
‘Not impeccable democrats’
Mr Cameron makes routine appearances before the Liaison Committee, which is made up of select cabinet chairmen.
He was grilled by defence committee chairman Julian Lewis on why he wish not provide more details of the 70,000 troops he described as “non-extremist antagonism fighters”.
The figure had been provided by the Joint Intelligence Committee, he voiced, and he did not want to give Syrian President Assad a list of the groups he should be aim.
They are not all “impeccable democrats”, he said: “Some do belong to Islamist societies and some belong to relatively hardline Islamist groups.”
The PM also held he was pre red to take another look at offers to take in Syrian refugees made by characteristics including Archbishop of Canterbury Justin Welby and former Labour serve Yvette Cooper – after home affairs chairman Keith Vaz said they had been shunned as they had “not been cleared”.