Despite huge efforts to keep the euro zone afloat, business leaders now believe that some of the region's most troubled countries are riskier places to invest than war-torn nations in the Middle East or North Africa.

A new survey conducted by accountancy firm BDO which asked chief financial officers (CFOs) from medium-sized companies how they view their growth prospects overseas found that CFOs are still pursuing international expansion in order to drive revenue, but they are more cautious about where they choose to invest.