"Reuters is [...] reporting that Iran informed the US via two diplomatic channels hours ahead of the attack [on USA Qatar base]"
https://www.theguardian.com/world/live/2025/jun/23/israel-iran-war-live-updates-us-trump-regime-change-middle-east-gaza-latest-news?CMP=share_btn_url&page=with%3Ablock-6859920a8f08c5412c197ade#block-6859920a8f08c5412c197ade

"The main remaining base in northeast Syria hosting U.S. troops is on full alert and mobilized for possible attacks by Iran or Iran-aligned groups [...]"
https://www.lbcgroup.tv/news/middleeastnews/863296/main-us-base-in-syria-on-full-alert-in-case-of-possible-attack-by-iran/en?src=rss&utm_source=TheWALL360&utm_medium=Rss-articles&utm_campaign=rss&utm_term=Rss