Iran has built considerable political clout in Iraq since the fall of Saddam Hussein’s regime. Its wide sphere of influence could be expanding, raising domestic tensions and alarming U.S. policymaker…

Washington and Tehran seem determined to revive the deal that freezes Iran’s nuclear program, despite domestic criticism on both sides and the apparent sabotage of an Iranian facility.

Iran’s new negotiating team signaled few compromises as it resumed talks over freezing its nuclear program amid reports of new uranium enrichment efforts.

Iran is facing international pressure over its nuclear program and assassinations of top officials. Meanwhile, its move to lift subsidies could stir public revolt.

Any sharp drawdown of U.S. forces in Iraq grants Iran a golden opportunity to expand its influence there and threatens to inflame sectarian tensions.