BANGKOK: Thailand announced on Friday that it plans to back out of an offshore border agreement with Cambodia, the latest barb in a diplomatic dispute fueled by Phnom Penh's appointment of ousted Thai Prime Minister Thaksin Shinawatra as a government adviser. The moves comes a day after both countries recalled their ambassadors and makes good on a Thai promise to review all its agreements with Cambodia.The Wednesday appointment of Thaksin as an economic adviser to Cambodia's government soured already poor relations between the two neighbors.