"Israel worries, that too many simultaneous attacks from different directions — will overwhelm the Arrow-2 "

"... Which begs the question: Why chance a broader war in order to stop the weapons? After the airstrikes, Syria’s cabinet declared that it had a duty “to defend its people by all available means,” and UN Secretary General Ban Ki-Moon expressed his “grave concern” over the attacks.“Israel’s alleged airstrikes in the Damascus region play nicely into the hands of Assad and the Syrian regime,” Haifa University professor Kais Firro tells Al Monitor, because the Assad regime can now label the rebels as tools of the Jewish State. “In fact, they’re celebrating. It’s exactly what they needed.”
... But the worry in Israel is that too many simultaneous attacks — especially simultaneous attacks from different directions — will overwhelm the Arrow-2. “It’s quite easy to stop a single point of threat. Unfortunately, the battlefield situation is more complicated,” Haimovitz tells Danger Room.
And a single Fateh-110 getting through could have devastating consequences if it hits a major city. .."