Iran vows to respond to US strikes, says US energy companies' facilities are 'exposed'
By Nayera Abdallah and Eman Abouhassira DUBAI, Sept 7 (Reuters) - Iran threatened on Monday to retaliate against any new U.S. attacks on its assets, warning that the energy production chain in the region was "sprawling, accessible and exposed" and that U.S. oil and gas companies there shared that