<p>How are Donald Trump’s ambitions in Venezuela and Greenland changing America’s place in the world? President Trump’s key adviser Stephen Miller has said that we are living in a world “that is governed by strength, that is governed by force, that is governed by power” - so where has that philosophy come from?</p><p>All this week, we are teaming up with our sister podcasts to explore how power and influence around the world is shifting. We exploring who is in a sphere of influence and who is being controlled by one.</p><p>Today, we speak to Anthony Zurcher, co-host of Americast and the BBC’s North America correspondent, about what US history tells us about this moment.</p><p>Producers: Sam Chantarasak and Xandra Ellin</p><p>Executive producer: Bridget Harney</p><p>Sound engineer: Travis Evans</p><p>Senior news editor: China Collins</p>