U.S. rejection of international agreements like UNCLOS only emboldens our adversaries to challenge our leadership

U.S. presidents do not create and shape multilateral structures because they believe in global governance as an abstract philosophy. They do so because they want to advance the strategic and national security interests of the United States, which, for more than 65 years, have been tied up in the preservation and strengthening of a rules-based international order. These structures are not always perfect. When they are flawed, the tough process of ratification makes sure that problems are addressed. Unfortunately, however, doctrinal statements against the very idea of participation in multilateral organizations and agreements are now routinely undermining U.S. leadership overseas. This may have been an indulgence the United States could afford in the "unipolar" 1990s, but faced with a power transition in Asia, it is a strategic blunder that only emboldens those who long for the end of the U.S.-led international order.