Over 700 mathematicians have signed an open letter urging the International Mathematical Olympiad (IMO) Board to take a principled stand — consistent with its own past decisions — in response to Israel’s ongoing genocidal war in Gaza. The letter calls for the suspension of Israel’s IMO membership while still allowing its students to participate as individuals, as was done with Russia in 2022. Among the signatories are some of the world’s most renowned mathematicians, including Fields Medalists Timothy Gowers, David Mumford, and Cédric Villani, along with numerous IMO contestants and team leaders. Despite the killing of thousands of children, the destruction of Gaza’s schools, and the blocking of the Palestinian team from the 2024 IMO, the Board has taken no action. Two students from Gaza are still preparing for the 2025 competition — displaced, starving, and under constant bombardment — while the IMO amended its rules last year to suppress any discussion of the situation.