Look , I think John McCain has taken positions in the course of trying to win the Republican nomination , whether it 's the reversal and flip-flop on the intolerance with respect to Jerry Falwell and others , or whether it is the Bush tax cuts flip-flop , or whether it is this flip-flop now on the issue of Iraq , or whether it is , you know , global climate change , where he has not yet signed on to Joe Lieberman and John Warner 's bill .