Saudi Arabia, the world’s biggest oil exporter, is attempting to punish Russia, the world’s second-largest producer.

The state owned oil marketing companies (OMCs) have reduced the price of sensitive petroleum products like petrol by 24 to 27 paise a litre and diesel by 24 to 26 paise a litre across major cities as the price of international crude oil fell by most in a day since 1991 Gulf war.
Brent crude futures fell by as much as $14.25, or 31.5%, to $31.02 a barrel, the most since 1991 on March 9 after Saudi Arabia started a price war with Russia by slashing its selling prices and pledging to unleash its pent-up supply onto a market reeling from falling demand due the spread of coronavirus.
Petrol prices in Delhi decreased by 0.24 to at 70.59 per litre and diesel dropped by 0.25 at 63.26 per litre in Delhi, according to Indian Oil Corporation data.
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In Mumbai, petrol prices were cut by 0.27 and is now retailing for 76.29 per litre. Diesel prices on the other hand stand at 66.24 a litre after witnessing a price cut of 0.26 from last days prices. 
The price of petrol and diesel have come down by around 5 each since beginning of this year.
In Kolkata, petrol is retailing at 73.28 a litre, down 23 paise compared with yesterdays price of 73.51 a litre, and a litre of diesel will cost 65.59, 25 paise less than yesterdays rate.
Similarly in Chennai, local prices of petrol and diesel are 73.33 (25 paise less) a litre and 66.75 (26 paise decrease) a litre respectively. 
The price of petrol and diesel are likely to come down further in coming weeks as India follows monthly average pricing of benchmark crude oil.
Many experts see Brent crude oil prices fall as a blessing for the macroeconomy as India imports over 83% of its crude oil requirements.