Here's the answer, from General Wesley Clark, former Supreme Allied Commander of Europe, who retired as one of the nation's most highly decorated military officers.
During his 34-year career in the U.S. Army, he served in Vietnam, Latin America and ultimately was named NATO's Supreme Allied Commander, where he led a unified force to victory in NATO's first major combat action. Clark commanded all NATO forces to success in the important Kosovo conflict, saving 1.5 million Albanians from ethnic cleansing without a single Allied casualty.
Bottom line: Clark is the voice of experience and he makes it clear that Bush's incompetence is why the war in Iraq is a disaster.
Click here to watch highlights from General Clark's keynote speech.