BAGHDAD, Nov 13 (Reuters) - U.S. and international forces in northeastern Syria were attacked with drones and rockets at least four times in the past 24 hours, though there were no casualties and only minor damage, a U.S. military official said on Monday. U.S. forces came under attack three times on Sunday evening, including near the Al Omar Oil field and at a U.S. base at al-Shaddadi, the official told Reuters. Multiple drones were fired at U.S. forces at the Rumalyn Landing Zone on Monday morning, the official said. U.S. and coalition troops have been attacked at least 40 times in Iraq and Syria since early October. Reporting by Timour Azhari in Baghdad; Editing by Gareth Jones and Andrew HeavensOur Standards: The Thomson Reuters Trust Principles.

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Persons: Al Omar, Timour Azhari, Gareth Jones, Andrew Heavens Organizations: . U.S, Al Omar Oil, Reuters, U.S, Israel, Pentagon, United, Security, Thomson Locations: BAGHDAD, Syria, U.S, ., Al, Iran, Iraq, Gaza, Tehran, United States, State, Israel, East, Baghdad