TEHRAN, Feb. 18 (Xinhua) -- Iranian Foreign Minister Seyed Abbas Araghchi and Director General of the International Atomic Energy Agency (IAEA) Rafael Grossi held a phone call on Wednesday to discuss the latest developments of the indirect negotiations between Iran and the United States.

The two sides reviewed the results of the second round of the negotiations held in Geneva and discussed the mechanisms and requirements of preparing the draft of a negotiation framework, Iran's official news agency IRNA reported.

Araghchi highlighted Iran's concentration on developing a "preliminary and consistent" framework for advancing future talks, the IRNA reported.

Grossi described the Tuesday negotiations' results as "positive," voicing the IAEA's readiness for cooperation in developing the negotiation framework and supporting the process, it added.

One day prior to the second round of the nuclear talks, Araghchi and Grossi met in Geneva for technical discussions on Tehran's nuclear issue.

In remarks after the talks with the U.S. delegation on Tuesday, Araghchi said the second round was held in a more "constructive" atmosphere compared to the previous round in Oman on Feb. 6.

"Different ideas were proposed and seriously discussed, and eventually we managed to reach a general agreement on a series of guiding principles, based on which we will henceforth move on and enter the text of a possible agreement," he noted.

The renewed diplomatic process comes amid heightened tensions between Iran and the United States, with a U.S. military buildup near Iran. ■