Leaked on a pro-Iranian Telegram group were two U.S. intelligence papers that described Israel's military preparations for a potential war on Iran. According to the documents, the US is closely observing Israeli actions,

The US is investigating a leak of highly classified US intelligence about Israel’s plans for retaliation against Iran, according to three people familiar with the matter. One of the people familiar confirmed the documents’ authenticity.

U.S. officials are extremely concerned about a potentially major security breach after two alleged U.S. intelligence documents about Israel's preparations for an attack on Iran were published by a Telegram account affiliated with Iran.

The timing of the leak comes as Israel is completing preparations for a retaliatory strike on Iran in response to the October 1 missile attack.