killing of Iran's most influential powerbroker, Ali Larijani, has pushed the Islamic Republic into a more uncertain phase, complicating decision-making in Tehran and narrowing its options as the war grinds on, Reuters reported. 

The U.S.-Israeli war, opens new tab on Iran began with the ​killing of Supreme Leader Ayatollah Ali Khamenei alongside a group of military commanders, and shows no sign of abating, with several more senior officials now targeted by air ‌strikes.

The deeper challenge for Tehran is increasingly structural. A system built for endurance is being tested by attrition. As experienced officials are picked off in targeted killings, the pool of figures capable of managing both war and statecraft is shrinking, according to Reuters.