President Donald Trump has stated that it is premature to assess the full extent and duration of the US strikes on Iran, despite the military action having already taken place. In a letter to Congress, Trump emphasized the ongoing threat posed by Iran, which he described as an 'untenable' situation despite diplomatic efforts. However, lawmakers expressed uncertainty about Trump's plans, particularly after receiving a classified briefing on the strikes. This briefing came on the eve of a critical vote on a war powers resolution, which could potentially limit the President's actions. The US and Israel initiated the strikes on Saturday, with Iran responding by launching missiles and drones at Israeli and US-allied Gulf states. Trump's letter highlighted Iran's status as a significant state sponsor of terrorism and its pursuit of nuclear capabilities. He also assured that no US ground forces were involved and that the operation aimed to minimize civilian casualties. The President's actions have sparked debate, with Democratic lawmakers and some Republicans questioning whether Trump's strikes were legal without congressional approval. Secretary of State Marco Rubio and Defence Secretary Pete Hegseth briefed Congress, but some members remained unclear about the conflict's duration, objectives, and potential military involvement. Senator Chris Murphy emphasized the gravity of the situation, warning of potential American casualties. Other lawmakers expressed confusion about the administration's priorities and the conflict's potential duration. The war powers resolution vote in the Senate is expected to be close, with some Republicans undecided. The House, with more bipartisan support, is set to vote on Thursday.