What is Jabalia refugee camp, and how has it been targeted by Israeli forces?

Here is a bit of background about the camp:

• The Jabalia refugee camp was set up by the UN in 1948 to house Palestinians displaced after the Nakba – or catastrophe – referring to the ethnic cleansing of Palestine in 1948 when Israel was created.
• The camp is located in northern Gaza, close to a village with the same name.
• It was the Gaza Strip’s most populated refugee camp and also home to 26 UNRWA-run schools.
• In the first few weeks of Israel’s war on Gaza, it was struck multiple times by Israeli forces, including an attack on a school where thousands of displaced Palestinians had been sheltering.
• Gaza’s Health Ministry says more than 50 people were killed in the attack, and 150 were wounded.
• The Israeli military says the attack targeted Hamas fighters and claims dozens were killed in a “vast underground tunnel complex” under the camp.
• In December, an Israeli attack on the camp killed at least 90 Palestinians, leaving the camp in ruins.
• In early February, Israeli forces withdrew from the northern parts of the Strip, claiming they had destroyed Hamas as a fighting force in the northern areas.
• However, in May, Israeli forces re-entered northern Gaza and resumed attacks on Jabalia.
• The camp is currently two weeks into being besieged by the Israeli military.