obama is a child, but he would quickly be brought up to speed and given very similar options for situations.
No man/woman possesses all the skills and knowledge necessary to run the biggest and most advanced superpower in history. They surround themselves with people knowledgeable in this.
Bush's team's goal was to get control of middle east oil and bases - half his admin was on the PNAC team that wrote that big paper in 2000. It has been a blueprint for the preseidency. We don't like the ugliness of a "new pearl harbor" being 911 or the subsequent wars of oil and bases in caspian basin and arabia, but we'll be glad we have them when oil gets low, china gets more competitive, arabs stop shooting each other over the koran and figure out what they're sitting on, or Putin decides to accept Bush's offer of COld War II.
THe Bush preseidency actually was a very successful one, in that they very clearly achieved the goals they wrote down in 2000 lol...
Obama would do fine, as would most of these folks. His running mate would be a Biden or someone with experience. Or, the joint chiefs would set him stright quickly.
Everyone running would do a good job at meeting their goals. What we vote for is their GOALs. Ron Paul wants to end the war, and could do that. Rudy wants to grow the war and invade iran, he'd be very successful at that. We vote for the person and they do their thing!