Tensions in the Middle East, Eastern Europe and Africa have done little to dampen executives enthusiasm for the global economy, according to results of a McKinsey survey. Most executives believe that global GDP will grow at the same rate this year as it did in 2014, according to McKinsey, although there is less optimism in China, the world's No. 2 economy. Chinese executives, according to McKinsey, are notably downbeat about their home economy. The largest shares believe that economic con...