Israel troops taking positions near Gaza border

Israel has warned 1.1m Palestinians living in north Gaza to evacuate south, as it prepares to attack "by land air and sea".

The UN's aid agency told the BBC that Gaza is "being pushed into an abyss".

The US has sent a second aircraft carrier to the region to "deter hostile actions against Israel". Meanwhile, Iran has warned of "far-reaching consequences" if Israel continues attacking.

And tension is rising on Israel's northern border with Lebanon, too. An Israeli civilian has been killed near there by a missile fired from Lebanon.