Sinai Testing Ground for Gaza Rocket Builders
Israel expresses concern about the security vacuum on the Egyptian peninsula it withdrew from after the 1979 peace treaty with Egypt
Israeli sources say there is evidence Egypt's north Sinai region is becoming not only a rallying point for jihadist gunmen but a firing range for Gaza's indefatigable rocket builders, seeking ever greater range and accuracy for its weapons.
It was soon after the 2011 revolt in Egypt toppled President Hosni Mubarak that Israeli rocket radars began to spot unusual launches from the Palestinian territory, which Israel keeps under a land, sea and air cordon.