Thailand's prime minister was expected to push for a lowering of trade barriers during his visit to India while seeking markets for Thai products. Thaksin Shinawatra will also discuss security and telecommunications issues with Indian Prime Minister Manmohan Singh, a Thai government spokesman said. Shortly after arriving in the capital Friday, Thaksin met with Indian businessmen for lunch. A Thai delegation will promote the lowering of trade barriers and increasing the number of Thai airline flights to major Indian cities, said Thai government spokesman Chalermdej Chompoonut.