I don’t understand why relations between America and China deteriorated so much.<p>During both the Bush and Obama administrations, the United States policy, as expressed in both the Bush Doctrine and the Obama Doctrine, involved promoting democracy and freedom abroad and fighting against rogue regimes. The main difference between the two doctrines was that Bush was fine with acting unilaterally and Obama wanted to act multilaterally.<p>Anyway both doctrines also had that the United States would continue strategic partnerships with certain authoritarian regimes to promote American interests. Like the American partnership with Saudi Arabia.<p>During both administrations, the US worked closely with Russia and China too! Bush and Obama viewed North Korea and Iran and Libya as rogue regimes. China and Russia worked with USA on Obama Iran Nuclear Deal of 2015. China and Russia also helped USA in terms of North Korea during the Bush admin in terms of sanctions. Russia and China chose not to interfere in NATO operations in Libya during Obama’s time.<p>But over the past many years the US relationship with China seems to have worsened catastrophically. It cant be because of authoritarianism. The USA has no problem having strategic partnerships with authoritarian countries in the past and even had such a partnership with China post Nixon all the way through to Obama and his nuclear deal with Iran which China and Russia assisted in.<p>So what has happened? Nowadays you see the US Media saying that China Russia are rogue regimes in an axis with North Korea and Iran. Why did the US push these countries towards Iran and North Korea? Just 10 years ago both countries were working with America against those other two.<p>And now the decoupling between China and America is accelerating.<p>I guess this is something historians will be writing many books about for centuries to come.