ANJAR, Lebanon (AP) - On a small hill overlooking this border town, once a stark symbol of Syrian power in Lebanon, white-gloved forensic experts comb the earth for grisly reminders of this country's brutal past. Authorities have known about the mass grave for years but they have only now begun to exhume it, digging up 28 bodies over the weekend in a new challenge to Syria. The site is near the former headquarters of Syrian military intelligence in Lebanon. Syria vacated the headquarters - notorious for the torture of prisoners - when it withdrew its soldiers from Lebanon in April,...