New Delhi, April 2 -- South Korea and Indonesia agreed Wednesday to expand cooperation in defense industries, technology and supply chains as their leaders pledged to upgrade their strategic partnership in face of uncertainties stemming from the war in the Middle East, Seoul's presidential office said.

After a summit in Seoul between President Lee Jae Myung and Indonesian President Prabowo Subianto, the two governments issued a joint statement pledging deeper economic ties and continued cooperation on joint defense projects, including fighter jets, trainer aircraft and anti-tank missile systems.

The two countries agreed to deepen cooperation on supply chains for energy, critical minerals and other resources. Lee described Indonesia as a...