Israel blamed Iran on Wednesday after what it said was a drone strike hit a tanker operated by an Israeli-owned firm carrying gas oil off the coast of Oman.The Pacific Zircon was "hit by a projectile approximately 150 miles off the coast of Oman . on 15 November," Singapore-based firm Eastern Pacific Shipping which operates the vessel said in a statement, adding that there were no reports of casualties or any leakage of the cargo.