New Delhi, Aug. 26 -- Four small trading companies scattered across India's industrial corridors had no warning when their names appeared on America's financial blacklist Sunday. By the time markets opened in Asia, their accounts had been effectively cut off from the global banking system.

the coastal city that has long served as a transit hub for Gulf commodities - were among four Indian entities designated by the United States Treasury's Office of Foreign Assets Control under Executive Order 13846, the Iran sanctions framework the Trump administration has steadily expanded since taking office.

Joining them were Prakrutees Infra Impex India Private Limited, operating across Uttara Kannada and Mangalore in Karnataka's coastal belt, and ...