The arrests have raised fears that a new wave of repression is coming, as the government seeks to root out spy networks and clamp down on any dissent.

"Khamenei's position is surely weakened," Arash Azizi, who unveiled an alleged plot against the supreme leader, told Newsweek.

It’s been a week since the U.S. pressed Israel and Iran into a truce, ending a bloody 12-day conflict that had set the Middle East and the world on edge.

Israel's Prime Minister Benjamin Netanyahu said on Tuesday he expects to travel to the United States next week for meetings with President Donald Trump, after a "great victory" in a 12-day war with Iran last month.

President Donald Trump said early Monday he is "not offering Iran anything" despite suggesting new nuclear talks with Tehran.