Just call it one more Obama-sized failure -- and this one indicative of how little regard foreign leaders have for him.

Iran’s supreme leader, Ayatollah Ali Khamenei, rebuffed President Obama’s latest outreach, saying Tehran was still waiting to see concrete changes in American foreign policy.

Ayatollah Khamenei, who holds the ultimate responsibility for Iranian policy decisions, was responding Saturday to a video message Mr. Obama released Friday in which he reached out to Iran on Nowruz, the Persian New Year, and expressed hopes for an improvement in nearly 30 years of strained relations.

In his most direct public assessment of Mr. Obama and prospects for better ties, Ayatollah Khamenei said there could be no change between the countries unless the Obama administration put an end to hostility toward Iran and brings “real changes” in foreign policy.

“They chant the slogan of change but no change is seen in practice,” Ayatollah Khamenei said in a speech before a crowd of tens of thousands in the northeastern holy city of Mashhad.

No good was ever likely to come from this effort -- yet the Obamateur decided to engage in YouTube diplomacy. What he forgets is that the Iranian regime hates America (something not true of the Iranian people as a whole), and nothing is going to change that. What he has done here is made himself look silly, and the United States look impotent. Good going, Barry!