After four long years of Donald Trump's bull-in-a-china-shop approach to foreign policy, Joe Biden says: America is back. But was it actually true? Some major foreign policy snafus so far have thrown America's renewed global standing into question. The French government had such high hopes for the Biden folks that AUKUS felt like such a betrayal. A botched US withdrawal from Afghanistan facilitated the near-instant Taliban takeover after 20 years of American occupation. The next true test to America's global standing will be COP26 , the most consequential climate summit since Paris in 2015, because leaders are now looking to avoid environmental catastrophe. China, the world's largest carbon emitter, must be on board. Ian Bremmer explores the question: is America's credibility irreparably damaged no matter what Biden, or any future president, says or does?

Watch this episode of GZERO World with Ian Bremmer: Biden's rocky start on foreign policy