as a hegemonic hyperpower, while the US political scientists John Mearsheimer and Joseph Nye counter that the US is not a "true" hegemony, because it does not have the resources to impose a proper, formal, global rule; despite its political and military strength, the US is economically equal to Europe, thus, cannot rule the international stage. Several other countries are either emerging or re-emerging as powers, such as China, Russia, India, and the European Union. Joseph Nye discredited the United States as not a "true" hegemony in his 2002 article titled "The New Rome Meets the New Barbarians". His book of the same year he opens: "Not since Rome has one nation loomed so large above the others." And his 1991 book he titled Bound to Lead. Leadership, translated into Greek, renders hegemony; an alternative translation is archia – Greek common word for empire. Having defined the US hegemony as "not true", Nye looks for an analogy to the true empire: Decline, he writes, is not necessarily imminent. "Rome remained dominant for more than three centuries after the peak of its power ... In fact, there are striking parallels with the early Pax Romana (especially between 189 BC when the supremacy over the Mediterranean was won and the first annexation in 168 BC). Under that Pax Romana other states remained formally independent and very seldom were called "clients". The latter term became widely used only in the late medieval period. Usually, other states were called "friends and allies"—a popular expression under the Pax Americana. One of the first to use the term Pax Americana was the Advisory Committee on Postwar Foreign Policy. In 1942, the Committee envisaged that the United States may have to supplant the British Empire. Therefore, the United States "must cultivate a mental view toward world settlement after this war which will enable us to impose our own terms, amounting perhaps to a Pax Americana". According to Swen Holdar, the founder of geopolitics Rudolf Kjellen (1864–1922) predicted the era of US global supremacy using the term Pax Americana shortly after World War I. Writing in 1945, Ludwig Dehio remembered that the Germans used the term Pax Anglosaxonica in a sense of Pax Americana since 1918: The United States, Dehio associates on the same page, withdrew to isolation on that occasion. "Rome, too, had taken a long time to understand the significance of her world role." Two years