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.

Iranian foreign ministry spokesman BAGHAEI said a one-day meeting on Switzerland’s Bilgen mountain will include an afternoon quadrilateral session with the US, Qatar and Pakistan as a follow-up on implementation of memoranda of understanding with Washington. He said the US has failed to secure a Lebanon ceasefire, which will be the core topic; other agenda items include exemptions for Iranian oil sales and unfreezing of Iranian frozen assets.

Los Angeles declared a local emergency on June 20 after a large commercial storage facility ignited on June 17. The blaze has persisted for several days and produced heavy acrid smoke across surrounding neighborhoods; Mayor Bass said the declaration is to secure needed resources and protect community safety.