US air defenses may struggle to intercept Iran's one-way drones, according to a closed-door briefing on Capitol Hill. Trump administration officials revealed that Iran's Shahed attack drones pose a significant challenge, flying low and slow to evade air defenses. This comes as the war escalates, threatening a global energy crisis and Middle East instability. Despite concerns, officials downplayed the issue, noting Gulf state partners' interceptors. The briefing also addressed Iran's potential descent into a failed state, with regime change as an ancillary goal. The former supreme leader, Ayatollah Ali Khamenei, is believed to be deceased, and the process of finding a successor is complex. Lawmakers' expectations vary, with some predicting a quick resolution and others fearing a prolonged conflict. The administration's decision-making process remains under scrutiny, with no clear evidence of an imminent threat to the US. Democrats express unease over the conflict's scale and its impact on US defenses, while some Republicans defend the action as a necessary response to an imminent threat, despite Congress's lack of authorization.