BEIJING-Three security staff were stabbed to death on Tuesday in an attack near Kashgar in China's far northwest region of Xinjiang, Xinhua news agency said, the third such attack in just over a week.An assailant jumped off a vehicle passing a checkpoint at and attacked the officers about 30 km (18 miles) from Kashgar where 16 police were killed in a bombing and stabbing attack earlier this month.There was no evidence linking both attacks, Xinhua said.Suspected Muslim separatists and suicide bombers launched a dozen attacks in Xinjiang on Sunday, killing 11 people in the blasts and a subsequent shootout with police.China has blamed the two earlier attacks, more than 3,000 km (1,860 miles) from Beijing, on separatists seeking to disrupt the Olympic Games.China says militants seeking an independent "East Turkestan" homeland for Muslim Uighurs in the region are among the top threats to the Olympics, which began on Friday.As in the days of Noah...

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