This shift from an aspirational approach to intrusive approach can be seen in the backdrop of the deterioration of US-Russia relations and the probability that tensions are unlikely to dissipate in a foreseeable future.
A similar US assault on India-Russia energy cooperation can be expected soon, which is another promising area for US exports to India.
Besides, the US is also threatening to sanction Russia's financial sector.
In the recent period since the NSS was announced, the Trump administration has declared India as a “Major Defence Partner”, opening the door for the sale of more advanced and sensitive military technologies by American vendors at par with the US' closest allies and partners, and fostering convergence of interests with India on a range of issues like maritime security, domain awareness and so on.
Without doubt, this has been a “win-win” strategy for Washington.