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2  |  Decision-making within government
Introduction
1.  This Section addresses:
the roles and responsibilities of key individuals and bodies; and
the machinery established in order to make decisions pre-conflict, and
post‑conflict.
2.  This Section does not address:
the Inquiry’s conclusions in relation to the decision to join the US-led invasion of
Iraq, which can be read in Section 7.
Roles and responsibilities
Cabinet
3.  Under UK constitutional conventions – in which the Prime Minister leads the
Government but is not personally vested with the powers of a Head of State – Cabinet
is the main mechanism by which senior members of the Government take collective
responsibility for decisions that are of critical importance to the public. The decision to
deploy UK Armed Forces to Iraq clearly falls into that category.
4.  Cabinet is formally a Committee of the Privy Council, chaired by the Prime Minister.
5.  In 2003, the Ministerial Code said:
“The Cabinet is supported by Ministerial Committees (both standing and ad hoc)
which have a two-fold purpose. First, they relieve the pressure on the Cabinet
itself by settling as much business as possible at a lower level or, failing that, by
clarifying the issues and defining the points of disagreement. Second, they support
the principle of collective responsibility by ensuring that, even though an important
question may never reach the Cabinet itself, the decision will be fully considered and
the final judgement will be sufficiently authoritative to ensure that the Government as
a whole can properly be expected to accept responsibility for it.”1
6.  The Code also said:
“The business of the Cabinet and Ministerial Committees consists in the main of:
a. questions which significantly engage the collective responsibility of the
Government because they raise major issues or policy or because they are
of critical importance to the public;
b. questions on which there is an unresolved argument between Departments.”
1  Cabinet Office, Ministerial Code, July 2001, page 3.
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