Bulgaria's Prime Minister Plamen Oresharski (L) receives a bronze drum as a souvenir from PetroVietnam Chairman Phung Dinh Thuc during his visit to the company in Hanoi April 8, 2014. Oresharski is in... more 
Bulgaria's Prime Minister Plamen Oresharski (L) receives a bronze drum as a souvenir from PetroVietnam Chairman Phung Dinh Thuc during his visit to the company in Hanoi April 8, 2014. Oresharski is in Hanoi on a four-day visit to Vietnam from April 6 to April 9. REUTERS/Kham (VIETNAM - Tags: POLITICS ENERGY) less 
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Reuters | Photo By KHAM / REUTERS
Mon, Apr 7, 2014 11:19 PM EDT