South Korea demands action over leaked Pentagon documents, while Russia dismantles Mariupol train station.

South Korea will demand "appropriate measures" from the US after leaked Pentagon documents revealed US intelligence gathering on allies, including South Korea. A South Korean official cast doubt on the legitimacy of the documents, and a senior US official said that some of the documents may have been altered. The Pentagon is assessing the "validity" of the documents, and an interagency effort is assessing how the leak could affect national security and relationships with allies. The US and South Korea have strong military ties and frequently conduct joint training.