Israel believes that its inability to stop tunnel digging in Gaza means it should be even more brutal and that it should extend that brutality to the land it is stealing in the West Bank. You can read about it here:
Dear Bibi - These tunnels and your response to them demonstrate two things:
1. No human beings will sit idly by while an aggressor attempts to starve them to death; and
2. In this lopsided struggle, it is Israelis who are the "beasts".