After Turkey’s seizure of alleged Russian military equipment from a Syrian plane headed from Moscow to Damascus, The State Department said it had "grave concern” that Russia is continuing to supply Syrian President Bashar Assad’s regime with materiel that could be used to bolster its fight against rebels

According to Washington post,State Department spokeswoman Victoria Nuland told reporters that "We have no doubt that this was serious military equipment,”

Turkish fighter jets on Wednesday intercepted the Syrian Air flight from Moscow and seized what it said was ammunition and military equipment for the Syrian Defense Ministry.

But Russian Foreign Minister Sergey Lavrov said the plane was legally carrying Russian radar parts for Syria

Russia and China have been harshly criticized for their stance by the U.S. and its allies, and Nuland took that criticism a step further on Friday

Nuland added that "There are no Security Council sanctions on Syria because Security Council members Russia and China continue to block them”. "Everybody else on the Security Council is doing what it can unilaterally to ensure that the Assad regime is not getting support from the outside”

"No responsible country ought to be aiding and abetting the war machine of the Assad regime and particularly those with responsibilities for global peace and security.