Skip to content
Briefings are running a touch slower this week while we rebuild the foundations.See roadmap
Iran Conflict 2026
1JUN

Murkowski misses her own AUMF deadline

3 min read
08:32UTC

Senator Lisa Murkowski's draft Iran AUMF, targeted by her own office for 28 April introduction, did not reach Congress.gov by close of business. Collins, Tillis and Curtis have publicly backed the concept; nobody has filed the bill.

ConflictDeveloping
Key takeaway

Murkowski's draft Iran AUMF missed her own filing target; the Senate now produces no instruments on the war.

Senator Lisa Murkowski of Alaska did not file her draft Iran Authorisation for Use of Military Force by close of business on Tuesday 28 April, the date her office had targeted last week for introduction . Congress.gov carried no Iran AUMF bill number under her name; the Quiver Quantitative Senate-filings tracker still listed S.4236, the American Seafood Competitiveness Act, as her most recent introduction 1. An AUMF is the congressional instrument under Article I that grants the President legal authority to wage a particular war; without one the War Powers Resolution of 1973 requires withdrawal sixty days from the start of hostilities.

Susan Collins of Maine and Thom Tillis of North Carolina endorsed Murkowski's draft on Saturday 25 April ; John Curtis of Utah added his name as the third Republican backer the same day . The Senate has just rejected the fifth attempt to invoke War Powers oversight on Iran by 51 to 46 on 22 April . The political conditions for filing existed; the bill text existed; the staff drafting was complete. The act of dropping the paper into the hopper did not happen.

A filed AUMF would force the first signed Iran instrument of the war under the most adversarial conditions available to the White House. Either the president signs the bill and accepts congressional terms on his Iran policy, or he vetoes it and triggers a veto-override fight, or he ignores it and provokes an Article I confrontation. None of those options is attractive on a war The Administration has chosen to manage without paper. By not filing, Murkowski has spared the White House the choice. The Friday legal expiry will pass the way the prior four floor votes passed: without a vote on authorisation, without paper, without consequence inside the Senate's own rules.

Four failed WPR motions read as active opposition to an authorising instrument. The new pattern reads as something different. Collins, Tillis and Curtis publicly support a bill nobody is willing to make them vote on. The legislative branch has stopped producing instruments of any kind on the Iran war.

Deep Analysis

In plain English

The US Congress has a law , the War Powers Resolution , that says the president needs congressional approval to keep fighting a war for more than 60 days. That deadline is this Friday. The senator working on a bill to give that approval missed her own deadline to file it. Four separate Senate votes have failed to stop or authorise the war. On Friday the legal clock runs out, with no bill filed on either side.

Deep Analysis
Root Causes

Murkowski's non-filing follows a documented pattern in the Senate's handling of this conflict: four floor votes that produced a public record without a legislative instrument.

An AUMF introduced by Murkowski would be referred to the Foreign Relations Committee, where Senator Jim Risch chairs; Risch has not backed the concept, so a filed bill would die in committee without a discharge petition, a tactic Murkowski has not signalled. That procedural wall makes the Collins-Tillis-Curtis backing irrelevant: co-sponsors cannot force a bill past a committee chair who has not moved it.

The Collins-Tillis-Curtis backing is real but insufficient: three senators co-sponsoring a bill that cannot clear committee serve the same function as the four prior WPR votes , a public record of opposition without a forcing instrument.

What could happen next?
  • Consequence

    Friday 1 May becomes the fifth consecutive legal deadline the executive and legislative branches pass without a signed Iran instrument, extending the precedent that the WPR clock has no enforcement mechanism in practice.

    Immediate · 0.88
  • Risk

    The May appropriations cycle offers the next structural lever: a continuing resolution or supplemental spending bill could attach an Iran-specific funding restriction, converting the political position into a financial constraint.

    Short term · 0.65
  • Precedent

    If the WPR clock expires without enforcement action for the sixth consecutive administration, the practical legal threshold for sustained presidential military action without AUMF shifts permanently upward.

    Long term · 0.75
First Reported In

Update #82 · Iran writes Phase 1; Washington still has no pen

White House· 28 Apr 2026
Read original
Causes and effects
This Event
Murkowski misses her own AUMF deadline
The Senate's most credible vehicle for asserting congressional war authority over Iran failed to reach a docket on its own target date. The legislative branch is now matching the executive branch's silent posture.
Different Perspectives
Human rights monitors (Hengaw, Amnesty International, Iran HRM)
Human rights monitors (Hengaw, Amnesty International, Iran HRM)
Monitors documented a second death sentence for Zahra Tabari, 68, reported cemetery record deletions at Behesht-e Zahra, and a poll showing 81.5% of medical residents want to emigrate, against a background of 200+ confirmed executions since February. Iran's security courts operate at uninterrupted wartime tempo regardless of the diplomatic track.
Pakistan (mediator)
Pakistan (mediator)
Islamabad carried Trump's revised MOU demanding HEU destruction to Iranian negotiators, formally inheriting the role of sole active mediator after Oman's forced withdrawal. Pakistan lacks Oman's banking infrastructure for frozen-asset routing and carries its own regional stakes, making it a less structurally neutral broker.
Kuwait
Kuwait
Kuwait intercepted Iranian missiles and drones for a second time in days on 1 June, with air-raid sirens sounding nationwide, after invoking Article 51 self-defence on 28 May following the Ali Al Salem ballistic-missile strike. The repeated interceptions test whether Kuwait's domestic politics can sustain hosting US forces as a de facto co-belligerent.
China (PRC)
China (PRC)
Beijing sent scholars to Shangri-La rather than its defence minister and addressed Taiwan without mentioning Iran, maintaining bilateral energy corridor protection with Tehran while refusing diplomatic exposure at multilateral forums. Trump barred China as an HEU custodian on 27 May, removing Beijing from the deal architecture while China continues supplying DPI hardware that caps Iran's internet.
Lloyd's of London / war-risk underwriters
Lloyd's of London / war-risk underwriters
Lloyd's held its Hormuz war-risk designation at $10-14 million per voyage while Brent recovered to $93.91, maintaining the structural divergence from futures pricing that has persisted since late May. Underwriters require a UN Security Council resolution or government certification letter, not diplomatic optimism.
Gulf Cooperation Council states (Saudi Arabia, UAE, Bahrain, Qatar)
Gulf Cooperation Council states (Saudi Arabia, UAE, Bahrain, Qatar)
Five Gulf states wrote to the IMO on 21 May rejecting Iran's PGSA transit authority over international waters; Saudi Arabia and the UAE have not confirmed participation in the European Hormuz mission. The GCC is navigating between US security guarantees and exposure to Iranian fire, with no Gulf state formally co-belligerent except Kuwait.