The **Philippines** is upgrading facilities on **Thitu Island**, its only inhabited outpost in the **Spratly Islands**, allocating a total of **1.65 billion pesos** (about **US$27 million**) for development.
Enhancements include extending Thitu's airstrip to accommodate **F-16 fighters** and bolstering port facilities on Thitu and **Nanshan Island**, viewed as a means to enhance military reach.
Analysts warn that these upgrades could lead to increased **air traffic** and potential collisions between **Chinese and Philippine military** aircraft, especially if Philippine allies like the **United States** are allowed access.
China may react strongly to any US military presence, which could escalate tensions further, particularly around disputed areas such as **Subi Reef**.
The upgrades are seen as a necessary development to catch up with **rival claimants** in the South China Sea, where the Philippines had previously lagged in infrastructure investment.