Thousands of miles from the Persian Gulf, a sprawling network of tanker-to-tanker oil transfers off the coast of Malaysia and Singapore is helping Iran sustain its crude exports to China, even as the country navigates a tense ceasefire with the United States.Analysis of satellite imagery and maritime tracking data has identified the waters roughly 100 kilometres southeast of the Malay Peninsula as the primary hub for what analysts describe as a clandestine laundering operation for Iranian crude. Dozens of ship-to-ship transfers take place there every week, involving not only Iranian vessels but a wider cast of tankers serving the shadow...