Smoke was rising Wednesday in several parts of Gaza Strip Gaza where more than half a million people have been displaced in recent days by fighting. Israel has been pressing its military operations in Rafah, a city along Gaza's southern border with Egypt, and in northern Gaza, where Hamas has regrouped. Around 450,000 Palestinians have been driven out of Rafah over the past week, the U.N. agency for Palestinian refugees said Tuesday. In northern Gaza, Israeli evacuation orders have displaced at least 100,000 people so far. Some 80% of Gaza's population of 2.3 million Palestinians have fled their homes since the start of the war, with many relocating multiple times. No food has entered the two main border crossings in southern Gaza for the past week. Some 1.1 million Palestinians are on the brink of starvation, according to the U.N, while a “full-blown famine” is taking place in the north of the territory. Israel has portrayed Rafah as the last Hamas stronghold, brushing off warnings from the United States and other allies that any major operation there would be catastrophic for civilians. Seven months of the war have killed more than 35,000 people in Gaza, most of them women and children, according to local health officials. The war began Oct. 7 when Hamas attacked southern Israel, killing around 1,200 people there, mostly civilians, and taking about 250 hostage. Israel says militants still hold around 100 hostages and the remains of more than 30 others AP video shot by Nicolae Dumitrache and Alon Bernstein