WASHINGTON (AFP) — Former vice president Dick Cheney stepped up his assault on President Barack Obama on Tuesday, warning he was making "huge" mistakes on the economy and stripping America's anti-terror arsenal. Cheney, who has emerged as a fierce defender of the last US administration -- while former president George W. Bush's has remained silent -- also said Obama's plan to close the Guantanamo Bay terror camp was a "terrible" idea. "Bottom line is, we successfully defended the nation for seven-and-a-half years against a follow-on attack to 9/11," Cheney said in an interview with Fox Business Network. "That was a...