It's one of today's most compelling news stories, yet it's all but ignored by most of the international media. I'm talking about the growing persecution of Christian minorities in the Islamic world. It briefly made headlines last month when machete-armed Egyptian fanatics attacked worshipers in three Coptic churches in Alexandria and murdered one aged man at prayer. Then of course, there was March - when an Afghan man escaped a death sentence for the "crime" of converting to Christianity. But how many people heard about the recent arrest and jailing in Saudi Arabia of a group of Filipino guest workers...