Kissinger Warns Trump: ISIS Is Keeping Iran in Check, You Must Not Let Tehran Fill the Void – Newsweek
Former top U.S. diplomat Henry Kissinger has warned the Trump administration that Iran should not be allowed to fill the power vacuum that will be created when the Islamic State militant group (ISIS) is defeated.
In Iraq, Baghdad's forces have liberated the northern city of Mosul from the jihadi group and are close to ousting ISIS from all of its population centers. In Syria, a Kurdish-Arab coalition has recaptured almost half of the eastern Syrian city of Raqqa, which became the de facto ISIS capital after the group rose to prominence in mid-2014.
Now, the 94-year-old Kissinger, who served as secretary of state under Richard Nixon,has cautioned that defeating ISIS could lead to a radical Iranian empire across the Middle East.
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In these circumstances, the traditional adage that the enemy of your enemy can be regarded as your friend no longer applies. In the contemporary Middle East, the enemy of your enemy may also be your enemy. The Middle East affects the world by the volatility of its ideologies as much as by its specific actions,he wrote in an article last week forCapX.
The outside worlds war with ISIS can serve as an illustration. Most non-ISIS powersincluding Shia Iran and the leading Sunni statesagree on the need to destroy it. But which entity is supposed to inherit its territory? A coalition of Sunnis? Or a sphere of influence dominated by Iran?
The answer is elusive because Russia and the Nato countries support opposing factions. If the ISIS territory is occupied by Irans Revolutionary Guards or Shia forces trained and directed by it, the result could be a territorial belt reaching from Tehran to Beirut, which could mark the emergence of an Iranian radical empire,he wrote.
President Donald Trump meets with former Secretary of State Henry Kissinger in the Oval Office at the White House on May 10, in Washington, D.C. Molly Riley-Pool/Getty
Iran's elite Revolutionary Guards have been advising the Shiite-dominated Iraqi government and supporting Shiite militias, known as the Popular Mobilization Forces,working with Baghdadto liberate ISIS-held territories in the country.
In Syria, Iran is supporting the regime of President Bashar al-Assad alongside Russia. It has provided ground troops, tactical advisers and Shiite militiamen from countries such as Afghanistan to bolster the dictator's ranks.
Both Iran and the U.S. are working to degrade ISIS in the two countries, but the U.S. role is limited to special forces on the ground and a coalition of air forces bombing the jihadi group from above. Washington and Tehran rarely recognize the role of the other in combating the threat of ISISand are avoiding any escalation between the two militaries.
This has not extended to the Assad regime. President Donald Trump in April authorized the first American strike against the Syrian government. The U.S. government accusedthe Syrian government of carrying out achemical weapons attackagainst civilians. Both Syria and key ally Russia denied the allegations, despite witness testimony and soil samples gathered by Turkey that showed the presence of a chemical agent in the attack on the Idlib town of Khan Sheikhoun.
The Russian governmentsaid the Syrian militaryhit a weapons depot holding toxic weapons stored by militants. International powers, such as the U.S., Israel, Turkey, France and Britain,accused the Syrian regimeof targeting civilians with chemical weapons.
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- Eight months into the conflict, the U.S. war with Iran gets a revised price tag - MS NOW - October 28th, 2026 [October 28th, 2026]
- Vance reaches out to Iran security chief in bid to restart peace talks, WSJ reports - The Times of Israel - October 28th, 2026 [October 28th, 2026]
- Iran wars cost to American taxpayers grows to an estimated $47.1 billion - TribLIVE.com - October 28th, 2026 [October 28th, 2026]
- Iran to respond to Qatar offer allowing IAEA inspetion in Iranian nuclear sites - The Jerusalem Post - October 28th, 2026 [October 28th, 2026]
- Vance sent letter to Iran's security chief to revive peace talks - WSJ - Iran International - October 28th, 2026 [October 28th, 2026]
- Oil prices rise as U.S. reportedly tells Gulf countries to prepare for Iran strikes after midterm elections - CNBC - October 28th, 2026 [October 28th, 2026]
- Gulf states working on multipart peace deal to avert renewal of US-Iran war - The Guardian - October 28th, 2026 [October 28th, 2026]
- Trump is in a corner and likely to lash out at Iran again. Heres how to avert that disaster | Simon Tisdall - The Guardian - October 28th, 2026 [October 28th, 2026]
- US costs of Iran war rise to over $47 billion, according to Pentagon estimate - Reuters - October 28th, 2026 [October 28th, 2026]
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- Caretaker role will limit Netanyahu though hell retain war powers, as possible Iran attack looms - The Times of Israel - October 28th, 2026 [October 28th, 2026]
- Iran war will end "whenever I want it to end," Trump says as cost tops $47 billion - CBS News - October 28th, 2026 [October 28th, 2026]
- Netanyahu defies exit polls to take lead in Israeli election what it means for Iran war - New York Post - October 28th, 2026 [October 28th, 2026]
- In unprecedented confrontation, IDF chief said resisting Netanyahus order for military action tied to Iran - The Times of Israel - October 28th, 2026 [October 28th, 2026]
- US costs of Iran war rise to over $47 billion, according to Pentagon estimate - Military Times - October 28th, 2026 [October 28th, 2026]
- Trump weighing next move in war with Iran - Fox News - October 28th, 2026 [October 28th, 2026]
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- Irans Inflation Hits 88.7% as Officials Warn of Job Losses, Winter Shortages and Social Unrest - National Council of Resistance of Iran - NCRI - October 28th, 2026 [October 28th, 2026]
- US warns Gulf states of possible renewed Iran offensive after midterms report - The Times of Israel - October 28th, 2026 [October 28th, 2026]
- Iran says 7 oil tankers were attacked in the Strait of Hormuz as fears grow of a return to war - New York Daily News - October 22nd, 2026 [October 22nd, 2026]
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- Iran war updates: Tehran calls for diplomacy but ready to defend itself - Al Jazeera - October 22nd, 2026 [October 22nd, 2026]
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