New Delhi, April 8 -- India on Tuesday urged its citizens in Iran to remain wherever they are for the next 48 hours and to avoid all power and military installations hours after US President Donald Trump warned that the Iranian "civilisation will die tonight", further escalating the crisis in West Asia. An urgent advisory from the Indian embassy in Tehran urged Indian nationals to remain indoors. There were about 9,000 Indian nationals, most of them students, in Iran when military strikes by Israel and the US triggered the conflict in the region on February 28. Aseem Mahajan, additional secretary (Gulf) in the external affairs ministry, said on Tuesday that 1,862 Indians, including 935 students and 472 fishermen, had so far returned from Ir...