That is a good target for a Standard... Putin had no issue with shooting down the airliner of an ASEAN nation.
Who is in the G20? Let's see:
Argentina, Australia, Brazil, Canada, China, France, Germany, India, Indonesia, Italy, Japan, Republic of Korea, Mexico, Russia, Saudi Arabia, South Africa, Turkey, the United Kingdom, the United States, and the European Union.
I can see him arranging to travel on a Chinese aircraft and I'll predict that nobody will shoot that down. (Xi has his back, somewhat).