PARIS (Reuters) - France’s AXA moved to buy Bermuda-based XL Group for $15.3 billion on Monday to create what it said would be a world leader in property and casualty insurance. Logos of France's biggest insurer Axa are seen on a building in Nanterre, near Paris, March 8, 2016. REUTERS/Christian Hartmann/Files Europe’s second-biggest insurer offered $57.60 for each XL share, a 33 percent premium to Friday’s closing price, and said buying XL would result in property and casualty insurance...