Purple line above orange area was drawn by Mixed Franco-Siamese Commission in 1908 and accepted by Thai king. Line below orange line was unilaterally drawn by Thailand in 1962.
Prime Minister Abhisit Vejjajiva told the People's Alliance for Democracy that the cancellation of the border demarcation memorandum of understanding with Cambodia will be done only if the border disputes cannot be solved.
Abhist was speaking when he met PAD leader Chamlong Srimuang and PAD demonstrators at the Thai-Japanese Stadium in Din Daeng at noon Saturday.
The PAD called on the government to cancel the 2000 MOU and take the disputed plot near Preah Vihear Temple.
"I confirm that the MFA has been working hard on this, to make sure our rights haven't been breached," Abhisit said.
"About the land encroachment, we will cancel the MOU if the problem can't be settled. We will use both democratic and military means," Abhisit said, referring to the plot near the temple.