Ayatollah Ali Khamenei, Iran’s supreme leader, stepped up the pressure on reformist leaders on Sunday, accusing them of challenging the foundations of the Islamic regime amid warnings by the opposition that a new round of suppression could be under way.
In a meeting with the clergy, the ayatollah said the anti-government leaders, whom he described as “former brothers”, had turned a dispute over the June 12 election into “a fight against the system”.

