IRGC has used this for two reasons--to signal their discontent that Assad forces are taking beating at the hands of moderate Syrians and Islamists using a large number of TOWs and MILANs. Seems that Hezbollah has been whip lashed all over Syria and Iraq and have taken beatings as well recently.

Secondly they are signaling in two short press comments yesterday and today that once the nuclear deal is signed "sanctions" come off immediately!!

No one in DC seems to have noticed a deliberate Iranian non linear warfare concept in play being carried out by Khamenei and the IRGC.