An elderly man that "may" have recently been detained by North Korea has been identified as 85 year old Merrill Newman by the San Jose Mercury Press.If true, the report confirms Tuesday's speculation that North Korea had detained a second American tourist in twelve months, this time "from the plane on which he was to leave the country on Oct. 26".News of his arrest emerged less than 24 hours after the U.S. State Department issued a new warning against all travel to North Korea by American citizens.The blanket warning, the first of its type since U.S. travel to