Faced with a surge in migration from the Middle East and North Africa, two European countries are exploring the possibility of erecting towering steel security fences along parts of their borders, similar to Israel's barrier with Egypt. Hungary and Bulgaria have made preliminary inquiries about buying the Israeli-designed fences, according to an Israeli business source who declined to be named due to the sensitivity of the discussions. Both EU countries are beefing up their borders to deter migrants, many of them refugees from wars, who are seeking to use them as gateways to richer countries further north and west, particularly...