"Leadership is by precept and example---look seriously on how we are doing under this administration on that score. Really."

Well, Afghanistan was continuously at war, US has put it on path where there hope that country will have long lasting peace, children going back to school, etc. Africa has very serious problem with AIDs- have major program to address that. Libya on path of normalizing relations with rest of the World. Iraq has always been a problem in middle east, it's now heading firmly towards a democracy. Have discovered international network selling WMD and are rolling this back. Working towards getting Pakistan and India to more peaceful relationships- both a couple years back were near nuclear confrontation! Have involved China and other regional countries in solving problems with N Korea nuclear program.
Working somewhat successfully towards curbing Iran nuclear program.
Have probably avoided a possible global deflation which might have lead to another Great Depression type situation.
Continuing to open up global free trade. Stop playing with Kyoto foolishness- it's not completely dead, but close enough. And finally Bush has started down a path the *might* open up the space frontier.
All I can think of off hand. Oh, and added 7 new members to NATO.