A gas pipeline from Russia to India would be tricky to do given the geography (Himalayas) and geopolitics (Afghanistan and Pakistan otherwise) involved. With China the big question mark would be how quickly green hydrogen takes off over the next decade to store energy from renewables and balance production with demand. Once that's fully up and running, and it's on the brink of starting to ramp up, you no longer need natural gas to back up wind turbines and solar panels.