[4] On 9 June 2020, U.N. Secretary-General António Guterres stated in his biennial report to the UNSC on the Iran arms embargo that cruise missiles used in multiple 2019 attacks on Saudi Arabia had Iranian origin.

Some items were allegedly transferred[clarification needed] between February 2016 and April 2018 in a matter possibly "inconsistent" with Resolution 2231:[5] The Secretariat assesses that the cruise missiles and/or parts thereof used in the four attacks are of Iranian origin.At the time, US Ambassador to the UN Kelly Craft said that as a result of the Guterres report she would "circulate a draft resolution to extend the arms embargo on Iran soon".

[11][12] On 26 October, the procedural matter of if a group of member states could request the Secretariat to conduct an investigation rather than the Security Council as a whole deciding the matter was discussed at a meeting of the UNSC, with the United Nations Legal Counsel Miguel de Serpa Soares stating that United Nations Secretary-General and Secretariat staff "must not seek or receive instructions from any Government" but can take note of information brought to its attention.

In response to the defeat, the Iranian ambassador to the United Nations Majid Takht-Ravanchi remarked that "the result of the vote in [the UNSC] on arms embargo against Iran shows—once more—the US' isolation.

[16][17] On 19 August 2020, US Secretary of State Mike Pompeo said that his government intends to utilize the so-called snapback provision in ¶11 of the document, in which any member of the JCPOA can "demand the restoration of all UN sanctions".

The motion for the snapback, which is intended in case of significant Iranian non-compliance with the resolution, "starts a 30-day clock during which the UNSC must vote affirmatively to continue the sanctions relief that Iran was given in return for curbs on its nuclear program".