- More than 18,787 Palestinians were killed and more than 50,897 others were wounded as a result of Israeli airstrikes, according to the Palestinian Ministry of Health;
- On December 18, Israeli forces slightly advanced in the center of Khan Yunis city;
- On December 18, Israeli forces slightly advanced in the Rimal district;
- On December 18, clashes between Palestinian and Israeli forces continued in Shujaiyah;
- On December 18, Palestinian militants fired several rockets at Kissufim;
- On December 18, Palestinian militants fired several rockets at north of Sderot.
- On December 18, artillery duels and clashes between Hezbollah and Israeli forces continued in the Lebanese border area;
- On December 18, Israeli drone attacked the funeral ceremony of Hezbollah member in Aita al-Shaab;
- Hezbollah announced deaths of four of its members in southern Lebanon;
- On December 18, Israeli warplanes attacked civilian house in Aita al-Shaab;
- On December 18, sirens sounded in the town of Yaara;
- On December 18, sirens sounded in the town of Malikia and Ramot.
- Armed clashes between Palestinian fighters and Israeli forces were reported near Ramallah;
- Armed clashes between Palestinian fighters and Israeli forces were reported in Tubas;
- Armed clashes between Palestinian fighters and Israeli forces were reported in Nablus;
- A young Palestinian boy was shot dead by Israeli servicemen south of Tubas.