Firing endless barrages of rockets at innocent Israeli civilians is against all law, civil, humanitarian and international. True Hamas may have put some supplies aside, but storing electric needed to generate power is quite another matter. Don't worry too much about what Israel can of can't afford, that's not your problem. Summer is approaching, lack of water and a/c will alter the Pali's mindset rather swiftly. I assume you read a bit of history, just think about one word "Siege".
Kerry meets Egyptian officials in bid to assuage concerns over Iran deal (AP)
from the article: U.S. lauds Israeli restraint in face of Qassam rocket attacks