EXPLAINER: What’s the 4-nation Quad, where did it come from?

              Australian Prime Minister Anthony Albanese, right, and Foreign Minister Penny Wong arrive at Haneda International Airport in Tokyo, Monday, May 23, 2022.  The newly sworn-in Australian Prime Minister Albanese is scheduled to attend a gathering in Tokyo of the four-country Indo-Pacific group known as the Quad.(Fumine Tsutabayashi/Kyodo News via AP)
              President Joe Biden, right, meets with Japanese Prime Minister Fumio Kishida at Akasaka Palace, Monday, May 23, 2022, in Tokyo. (AP Photo/Evan Vucci)