Donald Trump is stacking his administration with loyalists including Marco Rubio for Secretary of State and Elise Stefanik for U.S. Ambassador to the UN. Trump’s re-election dominates APEC talks in Peru as Beijing’s trade relationship with Latin America outsizes the U.S. And why researchers are now facing a challenge in making AI engines smarter.  Sign up for the Reuters Econ World newsletter here. Listen to the Reuters Econ World podcast here. Find the Recommended Read here. Visit the Thomson Reuters Privacy Statement for information on our privacy and data protection practices. You may also visit megaphone.fm/adchoices to opt out of targeted advertising. Learn more about your ad choices. Visit megaphone.fm/adchoices