BEIRUT, LEBANON (4:25 A.M.) – The Russian military completed its largest missile delivery to Syria to-date this week, a U.S. official told Fox News on Wednesday.

Russia has just sent Syria the largest shipment of missiles between the two countries to date, the latest delivery between the two allies that could further change the stakes in the Middle East, U.S. officials told Fox News on Wednesday.

According to this U.S. official sourced by Fox News, the Russian military delivered a large shipment of 50 SS-21 short-range ballistic missiles to the Syrian coastal city of Tartous over the last two days.

The SS-21, which comes in different types, has a range of roughly 100 miles.

Al-Masdar News is unable to confirm the validity of this report.