The United States has accused the Syrian regime military air strikes of helping ISIS fighters advance towards the northern city of Aleppo 45 km away from the Turkish border, where they pushed back rival insurgents.
The verified Twitter account of the US embassy in Syria posted a series of tweets concerning the matter. The embassy itself has been closed and all activities suspended since 2012, however the Twitter account remains active.
The account describes Syrian President Bashar al Assad as a president who has long lost his legitimacy and "will never be an effective counterterrorism partner."
"Reports indicate that the regime is making air strikes in support of ISIS' advance on Aleppo, aiding extremists against Syrian population," a US embassy in Syria tweet said late on Monday.
"The Syrian army is fighting ISIS in all areas where it is present in Syria," a Syrian military source said. Syrian officials have previously denied allegations by Washington and Syrian opposition activists that the regime has aided ISIS.