At last credible opposition from the conservatives - Blair's position is extremely vulnerable, it is only the ineptitude of the opposition that has prevented his demise.
Mr Clarke voted against going to war in Iraq in 2003
Conservative leadership contender Ken Clarke has said Tony Blair made a "catastrophic error" in involving the UK in the war with Iraq.
The ex-chancellor, who opposed the war, said the reasons given for the UK supporting the war were "bogus".
The war had increased the threat to the UK from Islamic extremists, he said.
If Mr Blair believed there was no connection between his Iraq policy and the London bombs "he must be the only person left who thinks that", he said.
Mr Clarke also warned against "instant legislation" after terrorist attacks.
He said he did not know of any terrorist attack which had been the result of legal failings.
Conservative leadership contender Ken Clarke has said Tony Blair made a "catastrophic error" in involving the UK in the war with Iraq.
The ex-chancellor, who opposed the war, said the reasons given for the UK supporting the war were "bogus".
The war had increased the threat to the UK from Islamic extremists, he said.
If Mr Blair believed there was no connection between his Iraq policy and the London bombs "he must be the only person left who thinks that", he said.
Mr Clarke also warned against "instant legislation" after terrorist attacks.
He said he did not know of any terrorist attack which had been the result of legal failings.
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