Via
BuzzFeed, here's Mitt Romney in 2003 arguing that the president needs to be given some "latitude" in dealing with foreign policy matters (starting wars in Iraq, etc.) and that we shouldn't take "political shots" on that stuff.
"It's always possible for us, after the conflict has wound down, and after we've got a very different level of intelligence now that we're in the country, to be able to 'recast' what we knew at the time we were going into that conflict, and to be critical. And that's true in all things political. But when you're dealing with something relating to the lives of our servicemen and women, and we're dealing with a country and it's leadership, and you're dealing with the national security of our country, and with homeland security, I hope that we will not fall into the temptation to establish political policy or take political shots based on what we find out after the fact."
Then Mitt Romney went on to run for the presidency, twice, and decided that establishing political policy and taking political shots was just dandy to do in those situations. Yes, that's right. Mitt Romney changed his mind on something. Try to contain your shock.