Or are the Brits passing the buck of blame, they do mention the now long reported blocking, from within, about the conversations of the bush and blair.
Although the Cabinet Office has been under fire for stalling the progress of the four-year Iraq Inquiry by Sir John Chilcot, senior diplomatic sources in the US and Whitehall indicated that it is officials in the White House and the US Department of State who have refused to sanction any declassification of critical pre- and post-war communications between George W Bush and Tony Blair.
Without permission from the US government, David Cameron faces the politically embarrassing situation of having to block evidence, on Washington’s orders, from being included in the report of an expensive and lengthy British inquiry. read more>>>
Thing is plenty came out in the public testimony. Like these in the early days of:
The British Iraq War Inquiry
In the above link, yet to be officially released, delayed till summer of 2013 supposedly, is the site of the often called 'Chilcot Inquiry', you will find these
24 November 2009 - Even before Bush's administration came to power an article written by his then national security adviser, Condoleezza Rice, warned that "nothing will change" in Iraq until Saddam was gone
27 November 2009 - But there was a 'sea change' in attitude after the atrocities, with former national security adviser Condoleezza Rice targeting Iraq on the very day of the outrage.
30 November 2009 - George Bush tried to make a connection between Iraq and al-Qaida in a conversation with Tony Blair three days after the 9/11 attacks, according to Blair's foreign policy adviser of the time.
1 December 2009 - There was "a touching belief [in Washington] that we shouldn't worry so much about the aftermath because it was all going to be sweetness and light".
3 December 2009 - Boyce mentions the "dysfunctionalism" of Washington. He says that he would find himself briefing his American counterparts on what was happening in different parts of the US administration. Rumsfeld was not sharing information
Along with released documents and more. It's what went on behind closed doors that the final report should highlight with the rest!