Israeli Defense Minister Yisrael Katz revealed an intelligence document showing that Hamas leaders Yahya Sinwar and Mohammed Deif sent a letter to the commander of the Quds Force of the Iranian Revolutionary Guard Corps, Esmail Qaani, in June 2021, requesting support for the movement's plans to invade Israel, which were carried out on October 7, 2023.

“I am presenting here for the first time a document found in the tunnels of senior Hamas officials in Gaza, which proves a direct connection between Iran, Yahya Sinwar, and Mohammed Deif, as part of Iran’s support for Hamas’s plan to destroy Israel,” Katz said during a visit to the Military Intelligence Directorate’s intelligence gathering and technical illicit gains unit, known as Amashat. “In the document, they ask the Quds Force commander to transfer $500 million to destroy the State of Israel.” The document shows that Hamas asked Iran for $20 million a month for two years to “achieve these great goals, through which we will change the face of the world.”

The letter read: “We are confident that by the end of these two years, or within them, God willing, we will uproot this brutal entity and end this dark era in our nation’s history.”

Katz said that Saeed Izadi, head of the Palestinian division of the Iranian Revolutionary Guard Corps, "accepted the request and responded that Iran, despite its difficult economic situation and the suffering of the Iranian people, would continue to pump funds into Hamas because the struggle against Israel and the United States is the Iranian regime's top priority."

The Defense Minister added, "The conclusion is clear: Iran is the head of the snake, and despite all its denials, it funds and promotes terrorism in all regions, from Gaza, through Lebanon, Syria, the West Bank, and now with the Houthis in Yemen, seeking to destroy Israel." He concluded, "Israel will do everything in its power to prevent Iran from possessing a nuclear weapon, and will continue to strike its proxies in the region until the Iranian axis of evil is crushed and defeated."