On his first day on the job, President Donald Trump attended a prayer service at the National Cathedral and visited the CIA -- the agency he has vociferously attacked and insulted in the past -- to declare that the media had lied about his feud with intelligence agencies and that it had lied again about the size of the crowds at his inauguration. Meanwhile, over a million people marched through Washington and other cities in the U.S. and around the world to vow resistance to the new president.

In this special newsletter to mark the beginning of Trump’s presidency, we’ve pulled together our coverage of the new administration -- its policies, its people and its protesters.

Political scientist Simon Reich  asks what Trump’s insistence on “America first” means for NATO, an organization the president has described as obsolete.  Historian Peter Kastor argues that this presidency marks the end of an era defined not just by Barack Obama but also Bill Clinton and George W. Bush  Urban geographer Lisa Benton-Short sends a dispatch from the National Mall, America’s “stage for democracy.” And, if you want to brush up on Trump’s cabinet picks, here’s what our scholars expect from them.