"Obvious Answer" is not obvious at all. Moving out borders and building walls, fences and barriers only gains some time and a larger hostile population within the catchment. Sooner rather than later, Arab missile power and range will grow to reach any part of Israel and deliver more lethal payloads - unless Israel can develop credible deterrent and reliable interception systems. Are Israel's technologists and military planners asleep?
Suspected assailant in car-ramming attack in West Bank shot (Haaretz)
from the article: IDF says Hamas responsible for Katyusha fired from Gaza Strip