Thailand also has a very potent air force, if I may add. Their land forces also have a long history in crushing / sedating separatist forces ranging form communist insurgency, to the Pattani separatists in the south. They are a potent force.
Actually, Thailand is anything but a potent force, it can look good on paper, but its actually a hollow force, It does not matter much how much equipment they have or what the numbers are, their military is only adept to fight counter insurgency and civilians, but not much more than that. It also does not matter much what their past military background is in historical terms since today's Thai society has evolved in such a way that most Thais have become lazy spoiled wimps for the most part (sure, there are muay thai fighters, etc, but they are the exception to the rule), they don't have what it takes for real fighting as in a war and they would not go far. This might sound strange for most people, but for those that spent a lot of time in Thailand and really understand Thai people (myself included), they know that. Thais only fight if they have overwhelming numbers. I don't mean to be insulting to Thai people, but reality is reality.
A very telling example of how the Thai military works: They often buy equipment to show off or to to show that "we have that too" (Thais are very much into cultivating their image), so they bought an small aircraft carrier from Spain, but........ they actually never operated the ship because they discovered after the fact...... "oooops, this ship is very expensive to operate, we don't have the budget to operate it and its planes", so they keep it in port at all times and they use it as an attraction for the public to visit. That's how proficient the Thai military is.
Not long ago, Laos beat up Thailand in a brief border war and just recently, Cambodia held their own quite well during the border fighting at the Phra Vinear temple area even that Thailand has military superiority over both Cambodia and Laos by far. The Thai military is not doing very well at all fighting the insurgency in Pattani by the way. Some chinese people in this thread that talk about Thailand taking care of Vietnam, etc in military terms have no idea of what they are talking about.
The Thai air force is ok in terms of numbers for regional standards, but is not a "very potent air force" by far, the only modern fighter jets they have are 12 Gripens, after that they have old F-16 A's and some very old F-5's, that's all.