NO, Israel CAN"T legally set up "war zones" anywhere she wants, and start killling unarmed people whenever a troop feels like it. These are WAR crimes. Go back to your OWB land and build all the fenses you want.
Firebomb thrown during demonstration in northern Israeli town of Umm al Fahm (Haaretz)
from the article: IDF kills teenager in West Bank, fourth Palestinian death in a week