According to this circular from Syria’s Ministry of Oil, diplomatic missions and international organizations (vis-à-vis the UN) have to pay for their purchases of fuels from now on in USD exclusively. Octane 95 petrol is priced at 1.50 USD per liter ($5.68/gal) for the UN while it sells to the public for 90 cents per liter (6,600 SYP, $3.41/gal).

Why would the regime do that? Because they can.