
 “Israel will do all it can to prevent Iran from re-arming Hamas after its  losses in our Gaza operation,” said Chief of Staff Lt. Gen. Benny Gantz when he  met new armored corps conscripts Sunday, Nov. 25. Bedouin guides led the Iranians through secret smuggling trails in Sinai up  to the Gaza Strip undetected by Egyptian surveillance. They entered Palestinian  territory through one of the tunnels for smuggling arms and people which Israel  bombers had blasted 72 hours before the ceasefire. Hamas carried out a rush job  to make it fit for use.
But debkafile intelligence sources have  learned that Saturday, Nov. 24, just three days after the Gaza ceasefire halted  Israel’s eight-day operation to stop the latest Palestinian missile blitz, three  Iranian missile engineers managed to steal into the Gaza Strip. Another three  are on the way.
They are the first Iranian military personnel to land in the  Gaza Strip, arriving from their regular base n Lebanon and entering Egypt on  false passports.
The Iranian missile experts came to assess the  performance of the Fajr-3 and Fajr-5 supplied by Tehran which Hamas fired  against the Israeli population up to and during the Israeli operation. It is  important for the Iranian arms industry to learn the accuracy of their products'  aim and trajectory in battle conditions and how efficiently they  functioned against the defensive wall set up by Israel’s Iron Dome anti-rocket  system.
The Iranian engineers had an important finding to work with: On  Tuesday, Nov. 20, the day before the ceasefire, Hamas rocket teams carried out  an experiment against Israel’s wonder weapon: They fired a 16-rocket Grad salvo  at Beersheba. Iron Dome blew up 8 in mid-air, 4 landed outside built-up areas  but 4 made it into the heart of the town. A few minutes later Hamas started  shooting 14 Grades in volley after volley just a few minutes apart - altogether  30 rockets at the same target in the space of two hours. 
The score was 8 to  22 in favor of the Hamas tactic.  The experiment was designed to assess the Iron  Dome teams’ post-operation reloading speed – information which is a close IDF  secret.
What the Palestinians learned from the Beersheba experiment was that  their strength against the Israeli defense system lies in numbers: the bigger  the multiple missile barrage, the greater its chances of penetrating Iron Dome  cover and reaching urban targets. They accordingly put together large batteries  of 6 to 8 rockets each side by side and fired them all at the same time from  underground silos.
The launchers were then folded back underground for  concealment.
debkafile’s  military sources confirm that, like the Palestinians and Iranian missile  engineers, the team which developed Iron Dome likewise used the Gaza operation  as a testing ground. Certain improvements were introduced on the spot in the  course of the hostilities. This process continues apace.
The Iranian missile  experts arrived in Gaza from their regular duties with Hizballah rocket units in  Lebanon, which are to see to the proper maintenance of Lebanese militia’s store  of Iran-made weaponry and train its men in their use.
While there, the  Iranians learned Arabic and so have no difficulty in communicating with Tehran’s  Palestinian protégés, Hamas an Jihad Islami in Gaza.