Israel Defense Forces said it was conducting strikes on Hezbollah infrastructure in the southern Lebanese city of Tyre and several other locations.

At the Shangri-La Dialogue (May 29-31 in Singapore), UK Defence Secretary John Healey said the UK will work with the United States and Australia under the trilateral security partnership to jointly develop new weapons for unmanned submersibles. The UK will allocate £150m (about $200m) to the project. The announcement builds on the 2021 AUKUS pact, under which the US and UK agreed to help Australia build nuclear-powered submarines—a move that has prompted regional concern; the IAEA warned it could set a dangerous precedent and trigger a chain reaction.

Australian Deputy Prime Minister and Defence Minister Richard Marles confirmed on the 31st that Australia will be unable to purchase newly built US Virginia-class nuclear submarines under the prior procurement agreement and will instead receive US in-service Virginia-class boats. Under the US-UK-Australia trilateral security partnership (AUKUS), Canberra had planned from the 2030s to acquire two US in-service Virginia-class submarines plus one newly built, improved Virginia-class boat. Marles said the adjustment will age Australia’s submarine fleet but could relieve pressure on US shipbuilding capacity.