Iran's new president Hassan Rohani said Friday that President Barack Obama struck a new tone in his UN speech this week that left him optimistic about easing tensions between the two countries.

Rohani also said the recent elections that propelled him to the Iranian presidency created a "new environment" that could pave the way for better relations with the West.

Rohani said at a news conference in New York that he did not meet with Obama on the sidelines of the UN General Assembly this week because there was not enough time to plan such a high-stakes meeting.

But he said Iran emerged hopeful from a lower-level meeting with the U.S. and its international partners aimed at restarting talks to settle their nuclear standoff.

Rohani also said that he wanted talks with major powers on Iran's nuclear program to yield results in a short period of time.

"The atmosphere (in Iran-U.S. ties) is quite different from the past," Rouhani told a news conference on the sidelines of the UN General Assembly in New York, a day after the highest-level talks between the United States and Iran in a generation.

"Our goal is the shared interest between the two nations. Our goal is resolving problems, our goal is step-by-step creating trust between the governments and peoples," Rohani said.

The Iranian president also said he hoped nuclear talks with the United States and other powers "will yield, in a short period of time, tangible results."