India-ASEAN Summit, scheduled for December 17 in Thailand, has been postponed as crisis-ridden South-East Asian country is unable to host the meet.
The Summit, where the ambitious market-opening India-ASEAN Free Trade Agreement was to be signed in the presence of Prime Minister Manmohan Singh, has been deferred, a commerce ministry official said.
"We have been officially informed this morning that the Summit cannot take place," the official said.
The meeting, which was scheduled originally in the capital city of Bangkok, was later shifted to Chiang Mai.
Airports have been shut down in Thailand following anti-government protests.