Updated

The Hamas militant group's Gaza leader says protesters in a mass demonstration along the Israeli border next week will be unarmed and peaceful.

But Yehiyeh Sinwar says he is holding out the possibility that the huge crowd could burst through the fence into Israel.

Speaking with foreign journalists Thursday, Sinwar compared the residents of blockaded Gaza to caged animals whose actions are impossible to predict. He also claimed that Israel's borders are not internationally recognized and do not have to be respected.

"What's the problem if hundreds of thousands storm this fence which is not a border of a state? What's the problem with that?" he said.

Israel has said it will defend its border and accuses Hamas of exploiting civilians.

Israeli fire has killed 40 Palestinians since the protests began on March 30.