http://www.bbc.com/news/world-middle-east-26516704
„the Israeli military unveiled what it alleged was a cache of Syrian-made weapons being sent by Iran to militants in the Gaza Strip.“

Here some reasons why this story is an Israeli fabrication to torpedo the US talks with Iran and another desperate attempt to mislead the international community:
a) For one thing, Syria is not at all in the position to „export“ weapons to anywhere, let alone to Iran, a country with decades of experience in development and production of various short range rockets
b) The Syrian army needs every single bullet right now. Why does not Iran export own rockets to Hamas and instead reduces Syrias bitterly needed arsenal?
c) Syrias relationship with Hamas is at an all time low. Why should they help arm Hamas right now?
d) The Persian Gulf is full of american warships:
http://en.wikipedia.org/wiki/U.S._Naval_Forces_Central_Command
http://en.wikipedia.org/wiki/U.S._Fifth_Fleet
Why should rockets be flown from Syria to Bandar Abbas and then all the way back to Iraq, risking to be intercepted by the US navy:

e) How was the alleged Iranian weapons shipment supposed to break through the Israeli maritime blockade of Gazas coast when even aid flotillas are not passed through?
f) Iran currently has not a good relationship with Hamas and has met with PLO officials in Teheran just recently. One of the main reason is that Hamas took an anti-government position in the Syrian civil war and supports the rebel side
g) Hamas is also in tensions with the new Egyptian government so it would be no good idea to move Hamas bound weapons through the Suez canal
h) What should be the advantage of allegedy hiding the rockets below cement bags when Israel does not allow cement to enter Gaza either? Israel says it could be used to build bunkers or tunnels
i) Why are the cement bags labelled „Made in I.R. Iran“ in English letters but without any Farsi/Arabic script? Is Iran now a proud exporter of cement to non-middle-eastern countries?