Someone needs to buy Obama a globe. Even if it wasn’t his intention, Bush went a long way toward containing Iran back in the early 2000’s by invading both Afghanistan and Iraq. Look at that globe Obozo! What country is pretty much completely surrounded by US troops if we have a major presence in both Afghanistan and Iraq? What country has posed the greatest threat to ascend to hegemony in the Middle East over the past couple of decades. The answer to both of these is the same.
I don’t know if it was Bush’s intention, but he pretty well constrained a dangerous country with simultaneous invasions of its eastern and western neighbors.