New Delhi, March 8 -- US President Donald Trump on Sunday cautioned that Iran's next supreme leader would struggle to remain in power without his backing, as Tehran prepared to announce the successor to the late Ayatollah Ali Khamenei.

Iran's Assembly of Experts held a private meeting and selected the country's next leader, according to members of the body, nine days after US and Israeli strikes on Khamenei's compound killed him and pushed the Middle East into conflict,

The clerics did not reveal the chosen individual, saying only that the name would be announced soon. Some insiders indicated that Khamenei's 56-year-old son, Mojtaba Khamenei, could be the one to succeed his father.

Trump had previously demanded a say in the appointment...