Qatar's Ministry of Interior said an explosion occurred inside a factory in the Ras Laffan industrial area; no casualties or leaks have been reported so far.

On the 21st, Iran said a source close to its negotiating team reported the delegation had left the negotiating site in protest at President Trump’s threats. Informed sources said Trump’s latest remarks have paused US‑Iran talks in Switzerland and cast doubt on whether negotiations can continue. Earlier, Trump posted on Truth Social that Iran must immediately stop its "proxy" actions in Lebanon or the United States will strike Iran.

Qatar and Pakistan issued a joint statement saying the first round of US-Iran senior-level talks under a memorandum of understanding concluded in Switzerland. Parties agreed to form a high-level committee to provide political oversight of the mediation, with chief negotiators reporting regularly; the committee has agreed on a 60-day timeline to reach a final agreement and to allow immediate further technical talks. They also agreed to create a coordination group, with mediators' assistance, between the relevant parties and Lebanon to ensure cessation of military operations under the MoU; technical talks will continue this week at Switzerland's Bürgenstock resort on all outstanding issues.