No clash?

The talk of a “clash between Bush and Blair” over who is to be in charge in Iraq after the handover of power seems spurious. Blair and Powell sound like they are talking about different things. Blair says “final political control remains with the Iraqi government”. Which must be right. Iraq must be seen to be making the strategic decisions, if we are to be able to claim that there has been a meaningful handover of power. Powell says “US forces remain under US command and will do what is necessary to protect themselves”. Again, correct. At an operational level, after the strategic/policital decisions have been taken by Iraq, the US forces can only work effectively (and no doubt would only be prepared to continue to have a role in Iraq) if their commanders have authority on the tactical decisions. Or am I missing something?