over the nature of the 1960 U-2 incident resulted in the government being caught in a blatant lie at the highest levels, and contributed to a backdrop of growing distrust of authority among many who came of age during the period. The Partial Test Ban Treaty divided the establishment within the US along political and military lines. Internal political disagreements concerning treaty obligations in Southeast Asia (SEATO), especially in Vietnam, and debate as to how other communist insurgencies should be challenged, also created a rift of dissent within the establishment. In the UK, the Profumo affair also involved establishment leaders being caught in deception, leading to disillusionment and serving as a catalyst for liberal activism.