President Trump asserts it's premature to gauge the extent of Iran strikes, despite informing Congress of military action. He claims Iran's threats are 'untenable', yet lawmakers express uncertainty post-classified briefing. The US and Israel initiated strikes on Saturday, prompting Iran's missile and drone attacks. Trump's letter to Senate President Pro Tempore Chuck Grassley highlights Iran's status as a major state sponsor of terrorism and pursuit of nuclear capabilities. He assures no US ground forces are committed, aiming to minimize civilian casualties. Democratic and some Republican lawmakers question Trump's legal compliance, citing potential violations by launching strikes without congressional approval. Secretary of State Marco Rubio and Defence Secretary Pete Hegseth briefed Congress, but some remain perplexed about the conflict's duration, objectives, and potential military entanglement. Senator Chris Murphy emphasizes the gravity of the situation, warning of potential American casualties. Senator Richard Blumenthal shares similar concerns, fearing US troop involvement. Senator Brian Schatz expresses confusion, questioning the briefing's effectiveness. Lawmakers' support for the war powers resolution is uncertain, with some indicating a need for further clarification before making a decision.