For the masked gunmen in Jenin refugee camp, Israel's unannounced strike against Islamic Jihad in Gaza on Friday can have come as little surprise after months of clashes that have steadily lifted the profile of the Iran-backed militant group.
Firing into the air during a rally late last month to commemorate three young men killed 40 days earlier, they were admonished by a voice from the crowd which called out: "Save your ammunition for the black days that are coming!"
