This document discusses trust as the foundation of leadership. It defines trust as a positive expectation that another will not act opportunistically based on experience and familiarity. The key dimensions of trust are identified as integrity, competence, consistency, loyalty, and openness. Trust is essential for leadership as it allows followers to feel vulnerable without fear of exploitation. Different types of trust are described ranging from deterrence-based to identification-based trust. Basic principles of trust emphasize that mistrust reduces cohesion, productivity and trust while trust increases these factors and can be rebuilt over time.