Tulsi Gabbard, as Director of National Intelligence, has publicly stated that the U.S. intelligence community does not assess that Iran is currently building a nuclear weapon. While the phrasing "Tehran is not building one" is a simplified version of the official assessment, it aligns with her repeated statements that Iran is not pursuing a nuclear weapon, making the statement factually TRUE.

While Tulsi Gabbard has previously expressed skepticism about Iran pursuing nuclear weapons, there is no verifiable record of her stating in 2025 that "Tehran is not building one." The claim cannot be confirmed as true.

Tulsi Gabbard is not the Director of National Intelligence (currently Avril Haines holds this position), she is not a Republican (she left the Democratic Party in 2022 and became independent), and the statement refers to a future date (2026) that cannot be verified with current information.