On March 11 2003 in his book Burden of Power, Countdown to Iraq, which is being serialised by The Guardian, Campbell wrote: "(Tony Blair) took a call from Murdoch who was pressing on timings, saying how News International would support us, etc.
"Both TB and I felt it was prompted by Washington, and another example of their over-crude diplomacy. Murdoch was pushing all the Republican buttons, how the longer we waited the harder it got."
The following day he added: "TB felt the Murdoch call was odd, not very clever."
Mr Campbell claims in 2002 Downing Street believed the then chancellor Gordon Brown was "hell-bent on TB's destruction" as a result of his behind-the-scenes manoeuvring.
The former No 10 communications director also suggests that his former boss believed the Prince of Wales had been "captured by a few very right-wing people", following the publication of leaked letters he wrote about a US-style compensation culture in 2002.
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