South Korea disputes US intel leak, demands action.

South Korea has denied the authenticity of a leaked US confidential document that appeared to be based on internal discussions among top South Korean security officials, suggesting the US could have been spying on South Korea. The office of South Korean President Yoon Suk Yeol said in a statement that suspicions his office in Seoul was monitored are "utterly false" and that any attempts to shake its alliance with the US is an act "compromising national interest". US officials have said some documents giving battlefield casualty estimates from Ukraine appeared to have been altered to understate Russian losses.