Enstar and Torus acquire; Cooper Gay energy deal; Northcourt's nuclear facility; Catco hires Lam; PartnerRe appoints Haft; GC's organic growth; Aon Benfield's Q4; Endurance beats, Aspen misses; Lockton partners Beazley; Miller time for CNA; Peak Re hires Wong; Rate rises for The Hanover; Allstate's $3bn share buyback; Everest Re grows; Validus buyback; PartnerRe beats Wall St; Allied World doubles Q4 profits; AJG hires Walters