anian missiles struck a secret highly-secured underground US-Israeli military base during the 12-day war A Grayzone investigation revealed that on June 13

The claim that Iranian missiles struck a secret, highly-secured underground US-Israeli military base during the 12-day war, specifically on June 13, 2025, is partially supported by the available sources. Several reports indicate that on June 13, 2025, a significant escalation occurred in the Iran-Israel conflict, with missile strikes exchanged between the two nations. However, while there are mentions of missile strikes by Iran targeting Israeli military centers and air bases, there is no concrete evidence from the sources reviewed that specifically confirms the existence of a "secret highly-secured underground US-Israeli military base" being hit. The sources do indicate that the US military was involved in intercepting Iranian missiles and that Iran retaliated against US bases in the region, but the details regarding the specific target of a secret base remain unverified. Thus, while the broader context of missile strikes is accurate, the specific claim about the underground base lacks sufficient substantiation.