Hamas has built a series of subterranean rocket launching posts like those used by Hizbullah, according to a year-end security report released this week. The posts are connected by a serious of tunnels that also lead to bunkers, weapons storehouses and training camps.

According to the report, Hamas built much of its system during a six-month ceasefire with Israel in the second half of the year. During the ceasefire it was reported that humanitarian shipments of cement were being used by Hamas to build underground tunnels.