On Tuesday, U.S. President Donald Trump restored his "maximum pressure" campaign on Iran, that includes efforts to drive its oil exports down to zero in order to stop Tehran from obtaining a nuclear weapon.

Shakeri, an Afghan national living in Iran, told the FBI that a contact in Iran’s paramilitary Revolutionary Guard instructed him last September to set aside other work he was doing and assemble a plan within seven days to surveil and ultimately kill Trump, according to a criminal complaint unsealed in federal court in Manhattan.