Palestinian health officials say Israeli strikes overnight and into Sunday killed 15 people in the Gaza Strip, mostly women and children.

The U.N. and aid groups have rejected Israel’s aid distribution moves, including a plan from a group of American security contractors, ex-military officers and humanitarian aid officials calling itself the Gaza Humanitarian Foundation.

A group of American security contractors, ex-military officers and humanitarian aid officials is proposing to take over the distribution of food and other supplies in Gaza based on plans similar to ones designed by Israel.