Russian Bombers Use Iranian Base to Attack Syrian Militants

  • Strikes hit areas held by Islamic State and moderate forces
  • U.S. probing if strikes violate Security Council resolution

Su-34 aircraft.

Photographer: Valery SharifulinTASS via Getty Images
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Russia acknowledged that its warplanes used an air base in Iran to bomb militants in Syria, drawing U.S. complaints that the move “was not helpful” in efforts to enact a cease-fire in the country’s 5 1/2-year civil war.

Russian Tu-22M3 and Su-34 bombers flew from Iran’s Hamadan base Tuesday to attack Islamic State and Nusra Front targets in Syria’s Aleppo, Deir ez-Zor and Idlib provinces, the country’s defense ministry said in an e-mailed statement. They returned to the base after completing their missions, according to the statement.