How do humans think, feel and act during conflict? Explore war’s many psychological dimensions at 'War and the Mind', a free exhibition at IWM London. Plan your visit today. | Imperial War Museum London | Facebook

Listen to the psychological warfare of Hanoi Hannah (Trịnh Thị Ngọ), the North Vietnamese radio host who targeted American GIs during the Vietnam War. Her broadcasts were designed to break morale, telling soldiers their government had abandoned them and that they could not win the war. The clip features the infamous propaganda that urged GIs to defect and warned of the dangers of fighting a war for "rich leaders." | History In Pictures