Turnbull on Iraq

In addition to his presumably still-held visions of Australia as a Republic, it would appear that Malcolm Turnbull also disagrees with John Howard on Iraq. It will be interesting to see the response from both Turnbull and Howard to what could be a tricky alliance.
As a side note, the whole "party line" idea remains, to me, a bizarre idea that seems somewhat at odds with the whole concept of representational democracy.