Global Leadership is defined as "...leading people who are based in multiple regions of the world."
Global Leaders have to engage in very diverse groups of stakeholders and colleagues to get things done. They lead people across distance, cultures, time zones and in complex organizational structures such as a matrix, or even a networked organizational structure.
Global Leaders need to create a good understanding of where it adds value to be universal and where it is better to be local (e.g. global-local dilemma) They need the leadership style flexibility to lead people with different expectations about leadership, but also the resilience and authenticity to stand for something.
Leading globally is a big step up in complexity, and people need to develop the mindset and skill set required to succeed in this complex VUCA-(Volatility, Uncertainty, Complexity, Ambiguity) Environment.