<<Perhaps the McCain campaign felt that the foreign leaders did not need to be props in photo ops.>>
How considerate of them. Such consideration, such delicacy, has never been seen before in any political campaign, certainly never in a Republican campaign.
You'll forgive me, I'm sure, if I prefer an overwhelmingly more likely explanation: they don't trust her enough to get through a tea-and-crumpets introductory meeting with a foreign leader without somehow fucking things up.
Yet supposedly trust her enough to offer her to the people of the USA as good enough to serve as President should anything happen to their main candidate.
Republicans took the American people for idiots when they offered them John Insane as President. (No doubt buoyed by their previous successes in offering George W. Bush) Unfortunately for them, the people have started to look a little more closely at things, and I think, in the case of this latest PR gaffe with Sarah Palin, they are starting to realize that they were taken for idiots, and they don't seem to appreciate it very much.
Looks from here like the McCain-Palin campaign is very much over. Even dumping Palin at this point probably won't help, because they can't also dump the guy who selected her. But I'm starting to lean towards a dump in the near future. They've probably made up their minds to dump or not to dump, but if they decided to dump, they may be waiting for either one more fiasco like this, where their own lack of faith in her is highlighted, in which case she'll be pushed to resign on her own, or wait for her to do something really dumb (facilitated by them throwing her to the wolves and watching her get eaten up) in which case Insane himself can do the dumping and look more like a "decisive leader." OTOH, they may have decided that a dump at this point would just be too damaging to contemplate. Interesting predicament that the old war criminal has forced on them.