Officials from across the country gathered at the Adams Mark hotel in Denver.
Cheney spoke about the war on terror, saying it will only end when Osama bin Laden's network has been destroyed and Iraq has been deprived of weapons of mass destruction. He said there will be no truce with terrorists.
Cheney told the military leaders that the campaign could take years.
He said the United States has received support from 90 countries, and said there have been a number of successes in the war on terror, including the arrest of several top al-Qaeda leaders.
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