Mohammed Deif is the head of the Izzadin al-Qassam Brigades, the military wing of Hamas.
He is credited for helping plan and carry out numerous Palestinian terrorist attacks since the 1990s, which has led to him being informally known as Israel's "most wanted man" for almost 30 years, and is confirmed to have survived multiple attempts by Israel to eliminate him. He has also been designated as a terrorist by both the United States and the European Union.
Currently, Deif is widely believed to have been instrumental in the planning and carrying out of the October 7 massacre, which started the Israel-Hamas war in 2023.
At present, Deif is believed to still be at large in the Gaza Strip.
