That headline of mine was a trick. No, George Bush hasn’t commented on present events in Iraq, probably because he doesn’t believe it helpful for ex-presidents to criticize their successors.
But he already described the whole thing back in 2007, when he gave a speech explaining why he was vetoing a bill passed by the Democratic Congress which would have pulled troops out of Iraq (the first three minutes of the video are especially relevant):
For those who say “but Bush negotiated the agreement by which Obama ended up pulling out of Iraq,” there is no question that everyone involved in those Bush negotiations expected the next president would make a new agreement when the time came and that it would involve leaving some residual forces there. But it was clear that Obama had no interest in doing so; he barely participated in the talks and pulled out when the going got the least bit rough.
Contrast Bush’s speech in the video above with this speech of Obama’s which he made on the occasion of the complete withdrawal from Iraq. He justifies and celebrates that withdrawal by praising the accomplishments the US had made in Iraq up to then—including and especially those of the surge which he had bitterly opposed as a senator. Ironically and tragically, those achievements have evaporated now, although their loss might well have been prevented had he left a small residual force in the country.
If we had a real press, they’d all be pointing this out on the front page. But we don’t.