Third, the US-Japan alliance will have to face a new set of transnational challenges to our vital interests, such as pandemics, terrorism, and human outflows from failed states. Chief among these challenges is the threat posed by global warming, with China having surpassed the US as the leading producer of carbon-dioxide emissions (though not in per capita terms).
第三，美日同盟将不得不面对传染病、恐怖主义和失败国家人口流出等对我们根本利益的新一轮跨国挑战。在这些挑战中居于首要地位的是全球变暖，中国已经超越美国成为二氧化碳第一大排放国（虽然从人均角度衡量并非如此）。