Institute for Science and International Security

June 25, 2025 | |

‘Total Obliteration’: Trump Highlights Post-Strike Damage Assessments of Iran’s Nuclear Facilities

Trump Disputes Leaked U.S. Assessment: President Donald Trump disputed a leaked U.S. Defense Intelligence Agency preliminary assessment that minimized the extent of damage caused...

June 15, 2025 | Andrea Stricker |

Israel May Need U.S. Help to Take Out Key Iranian Nuclear Site Before Disaster Strikes

Iran is relocating its enriched uranium stocks for protection against Israeli strikes and will not tell the UN’s nuclear watchdog where, the nation’s deputy foreign minister said Saturday. The move...

June 13, 2025 | Andrea Stricker, Anthony Ruggiero

Nuclear Cooperation Among the ‘Axis of Aggressors’: An Emerging Threat

May 21, 2025 | Andrea Stricker |

9 Myths About Iran’s Uranium Enrichment Program

President Trump and his administration have demanded that Iran agree to the full, verifiable, and permanent dismantlement of its atomic weapons program — including the regime’s ability to produce enriched...

May 9, 2025 | Andrea Stricker |

Any Iranian Enrichment Gives Tehran a Path to Nuclear Weapons

Washington has restated its red lines on Iran. On May 7, President Donald Trump and Vice President JD Vance reiterated the administration’s demand that Iran peacefully dismantle its nuclear weapons program, including uranium enrichment as well as its plutonium reprocessing capabilities — key processes that make fuel for atomic arms — or face military action.

April 24, 2025 | |

‘None Of Your Business’: Iran Rebuffs IAEA Chief’s Concerns Over Tunnels Built Around Nuclear Site

Grossi Asks for Clarification on Tunnels, New Security Perimeter: Rafael Grossi, the director general of the International Atomic Energy Agency (IAEA), said on April 24 that he...

April 19, 2025 | Reuel Marc Gerecht, Ray Takeyh

The Iranian Negotiating Tactic the Trump Administration Doesn’t Get

Sanctions and ‘maximum pressure’ have never made the clerical regime abandon its nuclear ambitions.

March 14, 2025 | Orde Kittrie, Andrea Stricker, Behnam Ben Taleblu

Iran’s Nuclear Disarmament

The Only Deal That Protects U.S. and Allied Security

February 27, 2025 | Andrea Stricker |

Iran’s Nuclear Weapons Potential Leaps Ahead of IAEA Meeting

Iran’s major strides in its march towards a nuclear weapon hang ominously over the meeting of the International Atomic Energy Agency (IAEA) Board of Governors in Vienna on March 3-7. The nuclear monitoring...

February 19, 2025 | Andrea Stricker |

Detecting and Halting an Iranian Weaponization Effort

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January 10, 2025 | Andrea Stricker |

Trump should get tough again on chemical weapons states

The media has largely ignored a disturbing trend: Russia is openly using chemical weapons against Ukraine. Ukraine’s army support services say Russia has carried out 4,800 chemical...

December 25, 2024 | Andrea Stricker |

The Curious Case of Iran’s Destroyed Nuclear Site

On October 26 2024, the day after Israel conducted a massive counterstrike against Iranian missile and military sites, open-source sleuths noticed something strange: A building was unexpectedly missing...

December 6, 2024 | |

‘Shorten The Timeline’: Iran Touts Sending Heaviest Payload to Space as Nuclear Watchdogs Send Enrichment Warnings

Iran Launches Payload Into Space: Iran claimed that its space program successfully launched its heaviest payload yet into space on December 6, including a device capable of...

November 21, 2024 | Andrea Stricker |

Amid Grim Reports on Iran’s Nuclear Advances, IAEA Member States Vote to Censure Tehran

In the wake of concerns reported by the International Atomic Energy Agency (IAEA) following its recent interactions with Iran and inspections of Tehran’s nuclear sites, the nuclear watchdog’s 35-member...

October 28, 2024 | Seth J. Frantzman |

How many air defense systems does Iran have?

Iran has seemingly focused on gaining a large quantity of defense systems - but it is unclear if any are actually effective.

September 6, 2024 | |

Israel SitRep: September 6, 2024

Today’s Issue: | IDF Operation in Jenin: 14 Terrorists Killed, More Than 30 Arrested | IAF Serves as ‘Force Multiplier’ in IDF’s West Bank Operation | IDF’s Yiftah Brigade Carries Out Drill to...

August 30, 2024 | |

IAEA Reports Iran Increased Stockpiles of Near Weapons-Grade Uranium

The International Atomic Energy Agency (IAEA) released two new reports on Iran’s nuclear advances and non-compliance with the Nuclear Nonproliferation Treaty (NPT) on August 29....

August 29, 2024 | Orde Kittrie, Bradley Bowman, Behnam Ben Taleblu

Deterring Iran’s Dash to the Bomb

August 28, 2024 | |

U.S. Officials Cold-Shoulder Iranian Offer of Nuclear Talks

Citing Iran’s “nuclear escalations,” the White House signaled on August 27 that it was unlikely to revive the defunct 2015 nuclear deal with the Islamic Republic...

August 21, 2024 | Andrea Stricker |

Iran Is Shockingly Close to Nuclear Breakout Potential; The World Must Act

The UN nuclear watchdog, the International Atomic Energy Agency (IAEA), will soon issue new reporting on Iran’s nuclear program from a summer of inspections at Tehran’s nuclear sites. The new data...