Campaign Spot reader Sean notes this comment from Obama in a February Democratic debate:

RUSSERT: (discussing new Russian president Dimitri Medvedev) He’s 42 years old, he’s a former law professor. He is Mr. Putin’s campaign manager. He is going to be the new president of Russia. And if he says to the Russian troops, you know what, why don’t you go help Serbia retake Kosovo, what does President Obama do? OBAMA: Well, I think that we work with the international community that has also recognized Kosovo, and state that that’s unacceptable. But, fortunately, we have a strong international structure anchored in NATO to deal with this issue. We don’t have to work in isolation. And this is an area where I think that the Clinton administration deserves a lot of credit, is, you know, the way in which they put together a coalition that has functioned. OBAMA: It has not been perfect, but it saved lives. And we created a situation in which not only Kosovo, but other parts of the former Yugoslavia at least have the potential to over time build democracies and enter into the broader European community. But, you know, be very clear: We have recognized the country of Kosovo as an independent, sovereign nation, as has Great Britain and many other countries in the region. And I think that that carries with it, then, certain obligations to ensure that they are not invaded.

Sadly, I like that answer, or at least its implications about sovereign countries and invasions, more than anyone else’s answer lately. But at least McCain is talking about negative consequences of this invasion for Russia.