US lacks leverage as assault on Syrian enclave looms

Smoke rises over buildings that were hit by airstrikes in al-Sahan village, in the northern province of Idlib, Syria on Tuesday. “Air raid by the Russian occupation plane targets al-Sahan village,” the Arabic reads. (Ibaa News Agency/ via AP)

Civil Defense workers and Syrian citizens inspect damage buildings after airstrikes hit a market area in Idlib, Syria on June. 12, 2016. (Syrian Civil Defense White Helmets/via AP File)

WASHINGTON — Despite dire U.S. warnings and fears of a humanitarian disaster, the Trump administration has little leverage to stop Russia, Iran and Syria pressing ahead with a massive military assault against Syria’s northwest Idlib province.