• Seven killed in ‘massive’ Russian air attack on Ukrainian energy systems as temperatures plummet
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• Fresh search for TV anchor who mysteriously vanished nearly 30 years ago fails to find human remains
• Trump emerges from Mar-a-Lago seclusion to raucous reception at UFC with key allies
• A celebrity hairstylist, his wife, her porn star lover – and an alleged $1.6m life insurance ‘plot’ that led to murder