I am sorry that I was not able to answer your email earlier on. Thank you for your kind words. I hope I can do more for our PhD students. In relation to your PhD thesis topic, I am glad to hear that you are interested in border issues. There are so many interesting things that you can work on in this area of interest. My suggestion is that you look into issues related to migration across the Thai-Malaysian border by the Thai-Muslim people in the South. Do try a Google Search on "migration" or "border studies", which should give you some ideas about specific issues that you might be interested in working on for your PhD project.
Please do discuss this further with me when you have time.
Regards,
Surin