On the global economic front, Trump is waging trade wars with many countries, including US allies, and this has given the world jitters. US tariff spat with the European Union over steel and aluminum products led to its conflict with six other G7 members at the Quebec summit. Trump was not only late for the meeting and left early, but also refused to sign the joint statement, leading to a situation in which the G7 summit, for the first time, ended without any statement issued. Trump again threatened to levy additional tariffs on automobiles imported from the EU, and trade tensions will likely escalate. As far as China is concerned, Trump brandished the big stick of trade tariffs, and in disregard of World Trade Organization rules and mutual agreements, threatened to impose additional tariffs on products from China worth $200 billion, after having announced punitive tariffs on Chinese products worth $50 billion. If he really followed through on tariff plans, he would destroy China-US trade.

在地缘战略领域，特朗普用行动落实将美国战略中心从反恐向与大国地缘竞逐的转变。在西线，首次在波兰驻军，加强了在欧洲尤其是在东欧和波罗的海沿岸国家的军事存在与活动，对俄罗斯形成抵近战略围堵态势。在东线，加紧实施“印太战略”，罕见地强化对华遏制，尤其在台湾问题上，频踩中国红线，冒可能引发双方战略碰撞的风险。同时，推出多年来美国耗费最高的军事预算，大力扩充军备，特别着力研发新式核武器，并宣布推动组建“太空部队”，明确提出要确保美国的太空霸主地位，以图取得对中俄全面绝对军事优势，为美国独霸世界扫清主要障碍。

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