I've always believed that Bush & Cheney will do whatever is necessary to stop Iran from building nuclear weapons. This speech appears to confirm that view. I truly believe that using all our non-nuclear weapons we could capture Tehran in less than three months with a six week air war followed by a three week ground invasion. This current Iranian regime must shut down its nuclear weapons program or else the regime has to be removed before Bush leaves office in 2009. It's just too dangerous to leave this situation unresolved for a future president who could be too slow to act against Iran, and that could force the Israelis to use tactical nukes against Iran to save their nation. We surely don't want that to happen so it's much better to handle this ourselves with help from Israel and anyone in Europe who wants to help us.
There is also a possible way to topple Iran's mullahs without a massive invasion. The USA has naval superiority in the Persian Gulf. The bulk of Iran's oil production consists of offshore platforms, which the navy can take at any time with impunity. Most of the rest of Iran's oil is found very near its' shores, and could also be taken, though just taking the platforms would bankrupt Iran in short order, while shedding very little blood. As long as the US kept the flows to China in place, China should play ball.