Soldiers guard a street during the ASEAN+3 Health Ministers meeting in Bangkok May 7, 2009. Thai authorities threw tight security around the venue of a regional conference on the H1N1 flu virus, formerly referred to as swine flu, on Thursday to prevent any recurrence of the violence that forced an Asian leaders' summit to be cancelled in April. REUTERS/Sukree Sukplang (THAILAND POLITICS HEALTH MILITARY)