Switch to Desktop Site  686,000 Libya refugees flee to Egypt,
Tunisia  Trucks were piled high with household items as Libya
refugees crossed the border into Tunisia seeking safety from an
escalation in random bombings.   A Tunisian army soldier with a
sniffing dog inspects cars belonging to Libyan refugees fleeing
the unrest, at the Dhuheiba border crossing between Libya and
Tunisia, Tuesday, May 3. Several mortars hit Tunisian territory
near the Libyan border crossing of Dhuheiba, the site of fierce
fighting between pro-Qaddafi and rebel forces in recent days,
said eyewitnesses.  Chokri Mahjoub/AP  About these ads  The
Libyan revolution that began in February with hopes that Col.
Muammar Qaddafi would quickly be toppled like the Tunisian and
Egyptian autocrats before him, has turned into a protracted
conflict with a grim human cost.  Hundreds of thousands have
fled the violence. The exodus statistics compiled by the United
Nations contain all categories of Libyan migrants. UN High
Commissioner for Refugees A