Two-thirds of Syria’s Christians have left the country, an Aleppo bishop said Wednesday, blaming the rise of radical Islamic terrorism in the region rather than the Syrian government.Chaldean Catholic bishop Antoine Audo said there were about 1.5 million Christians in the country before the start of the conflict in March 2011. “I think now there are maybe 500,000. Two-thirds have left mainly due to the insecurity,” he told reporters in Geneva. In the embattled northern city of Aleppo, the exodus was even greater, he said, with only around 40,000 of its once 160,000-strong Christian community remaining. “You cannot imagine the dangers that we face every day,” he said. Wealthy Christians have all left, while “the middle classes have become poor and the poor have become miserable”.