I would say that Tusk is, if I'm honest. He has reasons to be - Poland much prefers (for obvious reasons) to escape the Russian sphere of influence as much as possible.
His speech when Poland ascended to the EU comes to mind:
It's why Tusk would be on my "Five World Leaders I would oppose ordinarily, but admire nonetheless" - I like optimism, even in the face of corrosive cynicism. Others would be:
Modi - say what you like about him, the guy knows how to get things done. Although I'm certain that the guy is being artificially bigged up, I'm pretty sure that India will be left with a competitive infrastructure at least.
Abe - despite nationalism, is avoiding knee-jerk inflation fears. He's in a hard place in Japan, which is suffering from a desperate demographic squeeze (dare I say it - like Europe would be if the populist right stopped immigration); but is performing admirably.
Cameron - I dislike the guy, but he could be sooo much worse. His detoxifying of the Tories, if somewhat cosmetic, was way overdue. His support for gay marriage, for no real political benefit (in fact the opposite, with his party becoming divided and
obsessed with the issue) really made him rise in my opinion. He did it because he believed it to be right - not for petty political reasons. I can't imagine pragmatic, moderate Merkel doing that.
I can't really think of any other conservatives in power that I respect. Possibly Key, but I don't know hell about NZ politics.