Which country ruled out deploying troops for military intervention in Iran in September 2026?

Explanation: South Korea ruled out deploying troops for military intervention in Iran, with President Lee also saying that President Trump clearly wants dialogue with North Korea and that preliminary coordination efforts to facilitate talks were continuing. The statement reflects Seoul's attempt to avoid entanglement in a Middle Eastern war while protecting its energy supply lines. For CSS aspirants, it is a useful example of alliance management and the domestic constraints on overseas troop deployment.