NAW is indeed not playing with the Canadian team. He tweeted this the other day:
Thank you God for the opportunity and best of Luck to the SMNT pic.twitter.com/z7ftaIggFP
— Nickeil Alexander (@TheReal_NAW1) August 7, 2019
Basically, he's following Zion and focusing everything on the Pelicans, rather than spending the Summer off doing team Canada things.
Nobody on the Pelicans has any international obligations this summer, I believe.