CAIRO (Reuters) -Israeli fire and airstrikes killed at least 12 Palestinians on Sunday across the enclave, local health authorities said, at least five of them near two aid sites operated by the U.S.-backed Gaza Humanitarian Foundation (GHF). Medics at Al-Awda Hospital in the central Gaza Strip said at least three people were killed and dozens wounded by Israeli fire as they tried to approach a GHF site near the Netzarim corridor. There was no immediate comment from the Israeli military.