why is india defying us oil sanctions?

India is defying US oil sanctions primarily to protect its energy security. The country imports over 85% of its crude oil and about half of its natural gas, so securing affordable and stable energy supplies is a top priority amid global tensions. Despite the US passing a law allowing up to 100% tariffs on countries buying Russian oil, India has committed to taking all necessary measures to continue its Russian oil purchases. This stance reflects India's need to balance geopolitical pressures with its domestic energy demands.