President Donald Trump declared Tuesday that the world faces a "big decision" regarding Iran: either strike a deal to end the war or "annihilate" the Islamic Republic.

Speaking to global leaders at the 81st United Nations General Assembly in New York City, Trump outlined stark choices for the international community concerning Iran's future. The President's remarks come amidst ongoing international tensions and the protracted conflict involving the nation.

Trump described the potential outcomes as extreme, stating the decision involves making a deal or driving Iran "into hell with no chance of survival and no hope of future greatness." The speech, delivered on September 22, 2026, emphasized the gravity of the situation and the administration's firm stance.

The President is also scheduled to hold meetings with key global leaders on the sidelines of the United Nations event. These discussions are expected to focus on pressing international issues, including the ongoing situation with Iran, and will likely shape diplomatic strategies moving forward.

This declaration from the UN platform signals a critical juncture in U.S.-Iran relations and potentially global diplomacy. The phrasing used by President Trump suggests a potential escalation in rhetoric and a hardening of policy objectives.

Further details on the proposed "deal" or the specific conditions that might lead to the "annihilation" of Iran were not immediately elaborated upon in the speech. The context suggests a high-stakes diplomatic and potentially military confrontation.

Officials and observers are analyzing the implications of Trump's ultimatum, with many anticipating intense diplomatic maneuvers and potential international pressure in the coming days and weeks. The speech sets a clear, albeit severe, direction for U.S. policy.

This story is developing, and ABC News will provide further updates as more information becomes available. Coverage is also being provided by ABC News Live.