By Nayera Abdallah, Eman Abouhassira and Enas Alashray DUBAI/CAIRO, July 20 (Reuters) - U.S. forces hit Iran for a ninth consecutive day on Monday as concerns grew over shipping through the Strait of Hormuz after Iran said two oil tankers had exploded and been immobilised. In a statement, U.S. Central Command said it had begun "a new wave of strikes" aimed at "degrading" Iran's ability to attack commercial vessels in the strait's vital shipping lanes. It gave no further details.
