Which is a source of political conflict between china japan and South Korea today ?

Trade barriers

Nuclear weapons development

Land claims in the South China Sea

Economic sanctions

Land claims in the South China Sea is a major source of political conflict between China, Japan, and South Korea today. The disputed territory in the South China Sea is claimed by all three countries, leading to tensions and disagreements over ownership and control of the area. This has sparked territorial disputes, military tensions, and diplomatic conflicts among the three nations.