If Iran is developing a nuclear weapon, should they be stopped before or after they may or may not have one? This is the scary, geo-political issue of the day involving the Middle East and therefore the world.
Times have changed. We don't play vinyl records on our iPods; we don't use pay phones when we're out and need to make a call. And, we shouldn't be funding last century's battles, especially when it comes at the expense of our troops.
The Afghans I know are wary that it has taken so many decades and so many ill-conceived strategies, but they still hope to live in a stable country -- free of an occupation and free of Taliban oppression.
The fall of The Wall signified the fall of the Soviet Union, and an end to the Cold War. And while this was of enormous historical import, I fear that future generations won't really pay much attention to it.