For India this is golden opportunity to put pressure on China on a broad range of issues.
PCA rulling is seen by many players as golden chance to put pressure on China.Japan in ECS. India-US-Japan in SCS.
The question is: will India be able to profit from it in any tangible manner?
Now that they have, in their Indian perspective, an NSG score to settle with China.
Remember... Modi is working towards his next election. So, 'standing up' to China is good for him and his party.
Will China budge or back down from the combined efforts of India-US-Japan axis? Is India underestimating China's national resolve? Does India or Japan have the power to push China without US support?
Hopefully, a peaceful solution can be found. The players are asking China to give up her sovereign territories. Can China afford this? Remember... if China gives in here she has to give in on many many fronts.
Peace is better than conflict.