India’s top buyer of Iranian crude, Mangalore Refinery and Petrochemicals, is seeking as much as 2.6 million barrels from the spot market, in the face of any possible supply disruption due to a payments row between the two countries. The RBI in December said that payments to Iran could no longer be settled through a longstanding clearing house system run by central banks, prompting fears over India’s $12-billion annual oil imports from Iran could be threatened.