Russia has a contract to provide Syria with powerful MiG fighter jets but has not begun delivering the planes, according to a Russian newspaper report.
Kommersant cited the head of Russia's state-run United Aircraft Corporation, Alexei Fyodorov, as saying a 2007 contract to sell MiG-31E interceptor fighters to Syria has not entered into effect.
The paper said Russian arms sales officials have denied such a contract exists.
The speedy MiG-31E can fire simultaneously at several targets up to 180 kilometers away. Deliveries to Syria might compromise Israel safety.
Kommersant cited Fyodorov as saying a contract to provide Syria with Mig-29M fighters is being implemented.
State arms sales company Rosoboronexport declined to comment on the report.