Bush presidency unbroken series of mistakes: Carter 7/28/2004 BOSTON, Massachusetts, July 27 (AFP) - Former US president Jimmy Carter came out swinging at the Democratic convention Monday, blasting George W. Bush for an "unbroken series of mistakes" he said had squandered the world's goodwill for the United States. Despite pledges to keep the four-day convention free of Bush- bashing, Carter used his opening-night speech to launch a fierce, partisan broadside on the incumbent that Democrats hope to oust in November's election. "Truth is the foundation of our global leadership, but our credibility has been shattered and we are left increasingly...