Commentary Throughout history, “revenge” has been a motivating factor in geopolitical relations between countries. For example, in 2001, following the destruction of the Twin Towers in New York, the President of the United States, George W. Bush, promised swift retaliatory action against the Taliban regime in Afghanistan that harboured Osama bin Laden, the mastermind behind the bombing. Indeed, countries, when seeking to inflict retribution on other countries, are often motivated by “revenge.” Although the role of “revenge”—sometimes referred to as “retribution”—in international politics is well-documented, the destructive role played by “revenge” in the lives of ordinary people is less understood. Yet, “revenge” is a powerful feeling that most people experience, from time to time, especially when they have been slighted or treated badly. And yet, it is common knowledge that one cannot go through life without humiliating words spoken to them or having experienced some form of adversity. As a …