Peter Garrett has already sold out on one of his main principles. He now doesn't want to see Pine Gap shut down, which puts him in line with ALP policy but puts him a long way from his own Nuclear Disarment Party's policy.
Now admittedly he's been focussing on environment issues more than peace issues these days, but it is still pretty galling for him to so readily drop such an important issue. He's going to lose a lot of friends if he stays on this path. What next, helping the ALP appease the CFMEU's Forestry Division by dropping objections to woodchipping?