U.S. Treasury secretary said opening the Strait of Hormuz and seizing Iran's nuclear stockpile are among the objectives.

Israeli military warned residents south of the Zahrani River in southern Lebanon to evacuate ahead of possible airstrikes.

May 31 — China’s PLA South Theater Command deployed naval and air forces for combat-readiness patrols in the territorial waters, airspace and adjacent sea/air areas around Huangyan Island (Scarborough Shoal). The command said patrols have been intensified since May to deter incursions, reiterated that Huangyan Island is Chinese territory, and framed the operations as protecting sovereignty and maintaining South China Sea stability.