In the real world, support for the war lies largely on the right, opposition on the left. The most hysterical opposition on the far left. If you're suggesting the Ron Paul and his supporters have left the Republican plantation to a degree that they find common cause with codepink and moveon, you're absolutely right, they have.
I'm not that familiar with American history. Will you support your contension that The GOP used to be a party of non-intervention with some credible examples. I'm looking for Republican Presidents in time of international crisis who practiced non-intervention.