Deputy Prime Minister Gan Kim Yong became Acting Prime Minister on Friday as Lawrence Wong flew to Brunei Darussalam for a two-day visit built around the 50th anniversary of bilateral defence cooperation.
The handover is routine on paper: when the Prime Minister travels, the deputy listed in the Cabinet order steps in for domestic decisions that cannot wait. In practice, the timing places Gan in charge while Singapore hosts the final Formula 1 sprint weekend of the season and while haze readings in the central region have crept back into the unhealthy band.
What Wong is doing in Brunei
According to the Ministry of Foreign Affairs, Wong will attend a joint parade at Muara Naval Base on 10 October featuring personnel and operational assets from the Singapore Armed Forces and the Royal Brunei Armed Forces. He and Sultan Hassanal Bolkiah will also launch a commemorative gallery tracing five decades of defence ties, before Wong joins a lunch hosted by His Majesty.
The programme includes a visit to SAF personnel training in Temburong and the ceremonial delivery of four Light Fire Attack Vehicles built by Singapore firm HOPE Technik for Brunei’s Fire and Rescue Department. Those vehicles underline how defence cooperation now spans industrial partnerships as well as exercises.
Why the jubilee matters at home
Brunei has long hosted SAF jungle training that cannot be replicated on the island. For Singapore readers, the visit is less about ceremony than about sustaining access: training space, interoperability and supply chains for specialised vehicles are part of the same security conversation as MRT resilience and cyber defence.
Wong’s schedule also keeps finance and foreign policy in the same suitcase. He spoke at the Forbes Global CEO Conference in Singapore on Thursday evening, warning that the artificial-intelligence investment boom will eventually correct and urging countries to cooperate on frontier-model risks. Hours later he was on the road for a defence milestone that predates the current AI cycle by half a century.
Acting PM weeks and the calendar
Gan, who is also Minister for Trade and Industry (Trade), inherits a crowded domestic inbox. Town councils are still rolling out haze advisories, the Land Transport Authority is enforcing cross-border ride-hail rules during the holiday weekend traffic surge, and households are receiving their first October utility statements under the lower fourth-quarter electricity tariff.
None of those files require a constitutional crisis narrative. They do, however, test whether inter-ministerial coordination continues when the Prime Minister’s physical presence moves from the Istana to Bandar Seri Begawan. Civil servants typically route urgent matters through the Prime Minister’s Office; Gan’s acting status gives those instructions legal cover until Wong returns.
Who travels with Wong
MFA listed accompanying ministers and officials including Defence Minister Chan Chun Sing, Minister of State Zhulkarnain Abdul Rahim and Member of Parliament Rachel Ong. Their presence signals that the trip is both diplomatic and operational: training inspections and hardware deliveries are not handled by a skeleton delegation.
For Parliament watchers, the visit does not suspend sittings on its own, but it compresses Wong’s availability for local engagements until he lands back in Singapore. The Government has not announced additional restrictions on large outdoor events despite the haze, leaving NEA’s daily advisories as the primary public-health signal.
What to watch next
The joint parade on Saturday is the visual centrepiece, but the Temburong training visit may produce more substantive readouts about exercise tempo and facilities. On the home front, Gan’s acting window is a reminder that Singapore’s executive is built as a team sport: the same week that sends the Prime Minister to Brunei also keeps a deputy ready to chair crisis meetings should the haze or transport enforcement flare.
Regional context
Brunei’s training areas have hosted Singapore infantry and armour exercises for decades, making the jubilee as much about soil and rainfall as about ships at Muara. When bilateral ties fray elsewhere in ASEAN, this relationship remains a quiet constant—useful when Singapore negotiates transboundary haze diplomacy with Indonesia at the same time.
Wong’s Forbes remarks on artificial intelligence and tariffs show how economic headwinds travel with him even on defence trips. Acting Premier Gan’s domestic inbox therefore includes not only haze and transport enforcement but also investor sentiment after Thursday’s bank sell-off.