"Why it matters: Xi's erosion of established guidelines for succession creates uncertainty and puts China at risk for high-level power struggles in the future."
My speculation as to why they would do such a horrible thing is because they know they can't hold the position and want to cause as much damage as possible before they leave. Why would they bomb civilian targets like apartment buildings?
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'The Red Hotel': Trying to cover World War II from a 'gilded cage' in Moscow (www.npr.org)
Huge explosions breach the Kakhovka dam in southern Ukraine (www.economist.com)
Nova Kakhovka dam in Kherson region blown up by Russian forces - Ukraine's military (www.reuters.com)