In Paris, President Trump joined world leaders Sunday as they gathered to pay tribute to the millions who died in World War I on the 100th anniversary of the armistice that ended the war. Speaking at a formal ceremony at the Arc de Triomphe, French President Emmanuel Macron warned that nationalism is the opposite of patriotism, in a clear dig against President Donald Trump. After the ceremony, over 70 heads of state attended the Paris Peace Forum. President Trump was reportedly the sole head of state present to skip it, returning to the U.S. instead. Trump also faced widespread criticism for his decision to cancel a visit to a U.S. military cemetery honoring Americans killed in World War I because it was raining. After headlines, we’ll speak to historian Adam Hochschild, whose article for The New Yorker earlier this month was headlined “A Hundred Years After the Armistice.”