JERUSALEM, Israel -- After the third round of meetings with Iran earlier this week, E.U. Foreign Policy Chief Baroness Catherine Ashton announced their indefinite suspension.

The two-day meeting in Moscow followed an initial meeting in Istanbul in April and a second in Baghdad in May.

In her announcement, Ashton said if a group of technical experts meeting in Istanbul on July 3 could find enough common ground, the P5+1 countries -- U.S., Britain, France, Russia, China and Germany -- could reconsider resumption of talks.

Since the outset, Israeli Prime Minister Benjamin Netanyahu has said Iran is simply stalling for time, playing a "chess game" with the world as it moves closer to developing a nuclear arsenal.

"[There's] no evidence whatsoever that Iran is serious about ending its nuclear program," Netanyahu said when Iranian President Mahmoud Ahmadinejad alluded to curbing uranium enrichment on his website.

Meanwhile, President Barack Obama and his Russian counterpart, Vladimir Putin, reportedly tried to convince Iran to show flexibility before the second day of talks in Moscow.

"We agree that Iran must undertake serious efforts aimed at restoring international confidence in the exclusively peaceful nature of its nuclear program," the two leaders said on the sidelines of the G-20 meetings in Mexico.