Washington, Oct. 25 -- The United States has raised security concerns for its personnel across the Middle East and is moving diplomats and their families away from some posts as intelligence warnings of potential Iranian attacks intensify, amid growing fears that Washington and Israel could launch fresh strikes against Tehran.

Moreover, US President Donald Trump has signalled the possibility of renewed military action against Iran, while Tehran has warned that any further aggression would invite retaliation.

A US intelligence memo dated October 23 warned that Iran has "substantially increased efforts to target US personnel" overseas, with alleged plotting efforts reaching "advanced stages" in the Middle East and other countries. The asses...