First of all the decision by India to buy Russian oil is mainly economic although it is tacitly approved by the US and the rest of the west. There is an independent undercurrent here though and that is to drive wedges like this in the world order in order highlight the importance of India. The country's collective self-esteem is partially driven by what was in the rear view mirror but now more so to better industrialize and gain respect (e.g. a seat on the security council).