U.S. President Donald Trump has urged Iran to reach a deal to end the conflict by a set deadline, warning of catastrophic consequences if no agreement is achieved.

“A whole civilization will die tonight, never to be brought back again,” Trump said in a post, adding that the outcome would mark “one of the most important moments” in world history.

Trump’s comments come as he presses Tehran to agree to terms aimed at ending hostilities, with the deadline set for Tuesday.

He said the situation could escalate dramatically if no deal is reached, though no further details were provided on potential actions.

NATO tensions grow amid U.S. stance

Separately, Spain warned that recent U.S. rhetoric on NATO and its allies is prompting Europe to reconsider its security framework.

Spanish Foreign Minister Jose Manuel Albares said Washington’s criticism of allies and threats to withdraw from the alliance are driving European countries to seek greater autonomy in defense matters.

Europe urged to boost defense independence

Albares stressed that while NATO remains mutually beneficial, Europe must take more responsibility for its own security.

He called for steps including deeper defense integration, the development of a pan-European military capability, and closer coordination across industries.

War in Iran strains transatlantic relations

The tensions come against the backdrop of the U.S.-Israeli war with Iran, which began in late February and has disrupted global shipping routes.

Spain has been among the most vocal critics of the conflict, closing its airspace to U.S. aircraft involved in the strikes and banning their use of joint military bases.

Trump has threatened retaliatory trade measures against Spain, further straining transatlantic relations as the crisis unfolds.