There’s a palpable sense of hope at the annual Davos World Economic Forum that the euro zone is edging away from the brink of catastrophe- but- business leaders say Europe’s woes are still holding back a global recovery. According to experts, a growth strategy is the missing ingredient in the policy cocktail that euro zone leaders are mixing to save the currency bloc from break-up. Without economic recovery, re-election will be challenging for presidents in Europe and beyond this year.