Israel has ordered the entire population of Gaza City to leave, as its forces prepare to capture the north of the Gaza Strip.

Israeli airstrikes have continued to destroy tower blocks, and the army says it now has operational control of 40% of the city, as ground forces prepare to fight what prime minister Benjamin Netanyahu has called the "last important stronghold" of Hamas.

Netanyahu this week said 100,000 people had left the city, but up to a million people are still living there – many in tents or shelters. Many of them say they will not – or cannot – leave.

After a strike hit a tower block near his home today, Ammar Sukkar called on Hamas negotiators to come and negotiate from a tent, not from air-conditioned rooms in Qatar – and insisted he would stay in the city.

"Whether you like it or not, Netanyahu, we're not leaving," he told a trusted freelancer working for the BBC. "Go and deal with Hamas, go and kill them. We're not to blame. And even if we're buried here, we're not leaving. This is my land."