Iran's Supreme Leader Ayatollah Ali Khamenei speaks at a meeting of Revolutionary Guard commanders.
Iran's Supreme Leader Ayatollah Ali Khamenei speaks at a meeting of Revolutionary Guard commanders. Photo by AP
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Iranian Supreme Leader Ayatollah Ali Khamenei said on Saturday he supported moderate President Hassan Rohani's diplomatic initiative at the UN General Assembly last week but that some of what occurred there was "not proper."

In his first comments since Rohani, committed to easing Iran's international isolation, spoke by telephone with U.S. President Barack Obama, Khamenei also emphasized that he does not trust the United States as a negotiating partner.

The phone call between Rohani and Obama, the highest-level contact between the two deeply estranged countries since 1979, capped off a week of overtures by Rohani and his foreign minister Mohammad Javad Zarif to the West.

The landslide election in June of Rohani, a centrist cleric, has raised hopes of a negotiated settlement to Tehran's long-running dispute with the West over its nuclear program - though it is Khamenei who will make the final decision on the contours of any deal.

"We support the government's diplomatic movements and place importance on diplomatic efforts, and support what was in this last trip," Khamenei said in a speech, according to the ISNA news agency. "Of course, in our opinion some of what occurred in the New York trip was not proper."

He did not elaborate on that point, but added: "While we are optimistic about our government's diplomatic staff, we are pessimistic about the Americans. The U.S. government is not trustworthy, is self-important, and breaks its promises."