Bangkok Post April 26, 2013 BANDAR SERI BEGAWAN, BRUNEI : Thailand and Myanmar have agreed to open three more permanent border checkpoints to give a boost to economic development. Prime Minister Yingluck Shinawatra and Myanmar President Thein Sein agreed on the Myanmar-proposed initiative on the sidelines of the 22nd Asean Summit in Brunei which ended yesterday. Deputy government spokesman Phakdeeharn Himathongkham said Ms Yingluck thanked the Myanmar government for raising the issue. The checkpoints are between Thailand's Three Pagodas Pass in Kanchanaburi province and Myanmar's Phayatongsu town; Ban Nam Pu Ron in Kanchanaburi and Myanmar's Tiki town; and the Singkorn temporary checkpoint in Prachuap Khiri Khan and Myanmar's Mortong town, he said. Mr Phakdeeharn said Ms Yingluck told Thein Sein that opening three more checkpoints would help strengthen ties between Thailand and Myanmar. He said Ms Yingluck took the opportunity during her meeting to foll