The US Treasury's Office of Foreign Assets Control (OFAC) published sanctions bulletin sb0465 on Friday 24 April, designating 14 individuals, entities and aircraft across Iran, Turkey and the United Arab Emirates (UAE) for ballistic missile and Shahed-series drone procurement1. Named assets include a Mahan Air Boeing 777-200ER registered EP-MTB. OFAC is the Treasury office that administers economic sanctions; sb0465 is the fifth nonproliferation round of the war.
The round's legal scaffolding matters more than the 14 names. OFAC designated under National Security Presidential Memorandum 2 (NSPM-2), the Cold War-era nonproliferation authority, and the September 2025 UN Security Council snapback vote. Neither requires a new Trump executive order, which is why The White House presidential-actions index records zero Iran instruments for the 55th consecutive day and the five energy Presidential Determinations Donald Trump signed on 20 April still carry no Iran equivalent.
Treasury's 15 April designations against the Shamkhani network operated on the same basis and were absorbed by Tehran as a matter of routine; this fifth round lands on the same Friday as the leaked Pentagon memo on Spain and the Falklands, and on the day after Trump's verbal Hormuz engagement instruction. Three federal bodies moved against Iran-adjacent targets inside two days without a Trump signature between them.
The procedural tell will arrive by Tuesday 28 April, the normal administrative cadence from an OFAC press release to a documented Federal Register notice. If sb0465 is converted to rule by that date, the round stays inside the standard appeal-rights architecture; if not, the method shift becomes another documented step away from instruments that courts or a future administration can reach.
