US President Donald Trump on Thursday issued a stark warning to Tehran, saying Iranian negotiators must “get serious soon, before it is too late”, even as he launched a blistering attack on NATO allies for what he called their complete “inaction’ in the ongoing conflict.In a sharp remarks on his Truth Social account, Trump described Iranian negotiators as “strange” and accused them of privately seeking a deal while publicly downplaying engagement with Washington.“They are begging us to make a deal… which they should be doing since they have been militarily obliterated, with zero chance of a comeback,” he said, dismissing Iran’s public stance that it was merely “looking at” US proposals.“They better get serious soon, before it is too late… there is no turning back, and it won’t be pretty.”The remarks signal a hardening of Washington’s posture as hostilities with Iran approach the one-month mark, with diplomatic channels appearing uncertain and rhetoric on both sides intensifying.Trump also turned his ire on the NATO, accusing member nations of failing to support the United States during the crisis.“NATO nations have done absolutely nothing to help with the lunatic nation… of Iran,” he said, asserting that the US “needs nothing” from the alliance while urging Americans to “never forget” the moment.The comments come amid conflicting signals over possible backchannel efforts to de-escalate tensions, even as public messaging from key actors continues to diverge sharply, underscoring the fragile and volatile state of the crisis.