D ECLINISM is in fashion again. As relations between America and China worsen, studying the ends of earlier ages of hegemony becomes more popular. Books predicting the unstoppable rise of autocratic strongmen and the death of democracy proliferate. There is much talk of the “Thucydides trap”: the inevitability of a clash between a rising power and an established one, as Athens challenged Sparta in the fifth century bc .
d Eclinism再次融为一体。随着美国与中国之间的关系恶化，研究霸权早期的结束越来越流行。书籍预测专制强人的不可阻挡的崛起和民主的死亡泛滥。关于“修昔底德陷阱”的话题很多：雅典在公元前五世纪挑战斯巴达，这是崛起的力量与既定力量之间的冲突。
