Vann believed America had a duty to lead other nations.

Evidence

He was convinced that having gained the preeminence it had been destined to achieve, the United States would never relinquish the position. — Neil Sheehan, A Bright Shining Lie, 17

Categorization

• corroborated: 2 independent passages support this claim — Neil Sheehan, A Bright Shining Lie, 17
• XREF: connects to: Vann embodied the optimism of post-World War II America. — Neil Sheehan, A Bright Shining Lie, 10