US President Donald Trump on Tuesday morning warned that Iran's "whole civilization will die tonight," hours ahead of his imposed deadline of 0000 GMT on Wednesday for a deal to be reached with Iran.

An Axios reporter, quoting an unnamed US official, on Tuesday said the US military conducted strikes on military targets on Iran's Kharg Island, with no official confirmation from Tehran yet.

The Israeli army on Tuesday claimed strikes on eight bridge segments in several areas across Iran, including Tehran, Karaj, Tabriz, Kashan, and Qom. Iran said two people were killed and three others injured in one of the attacks on a railway bridge in its central province of Isfahan.

Iran's Islamic Revolutionary Guard Corps also warned that if the US army crosses the red line in attacking civilian targets, Iran's response "will go beyond the region."