Indonesia is reviving plans to extend its Chinese-backed high-speed rail network, with ambitions to connect Jakarta with Surabaya, the nation’s second-largest city. But analysts say familiar complications could stall the project, from regulatory hurdles to the mounting debt owed to China.The proposed extension would build on Whoosh – Southeast Asia’s first high speed rail line – a US$7.3 billion project connecting capital Jakarta to Bandung in West Java province. The 142km (88-mile) railway,...