Syrian-Americans are blaming Russia for putting Syria’s largest city, Aleppo, at risk of falling into the hands of the Islamic State, and say the Obama administration isn’t doing nearly enough to stop it.

Russia has violated the cease-fire it recommitted to upholding just last week, according Omar Hossino, spokesman for the Syrian American Council. Hossino cited sources close to the ground, but the U.S. State Department has said several times that it doesn’t see Russia living up to the deal even yet, months after it was first reached.