A new defence pact between Tokyo and Manila allows the Japanese military to deploy in the Philippines for the first time since World War II - with the goal of deterring Beijing in the Sea. Analysts said the "quasi-security alliance" - which took effect in September and is known as a reciprocal access agreement - could harden Manila's stance in the contested waters,

Both countries have summoned each other’s ambassadors after Prime Minister Sanae Takaichi said a Chinese attack on Taiwan could draw a military response from Tokyo.

Tension between Japan and China has escalated over the new Japanese leader's suggestion Tokyo could intervene militarily if Beijing attacks Taiwan.