New, Improved Qassams
"Hamas has recently upgraded its Qassam rocket capability in the Gaza Strip, raising grave concern in the Israeli defense establishment.
Senior defense officials say that Hamas is now able to store the rockets for a relatively long period, which would allow the organization to launch a large number of Qassams at one time. Over the past year, the IDF and Israel Security Agency (Shin Bet) have said that two developments could prompt a major Israeli operation in the Gaza Strip. One was an improvement in the range of the Qassam rockets, which would place Ashkelon within range. The other was an ability to store the rockets for a longer period of time. It seems that Hamas has already achieved the latter, and is close to achieving the other."