The NK military has mostly vietnam era stuff. The new stuff aren't many, and hence, negligible. The fact that they fake images to make them look stronger and more numerous tells me most of their stuff is not in working condition. Or they can't afford to use them too often.
Their soldiers probably didn't get much real firing training either.
I would say overall the military power is not comparable (weaker) to Iraq in the 2nd gulf war. Sure, the military has lots of soldiers but these days any large group is easy picking and destroyed in seconds. The most dangerous things are probably the ZSU-23/57, mines, and the mountain ranges.
It's easy to destroy their installations etc but taking the mountains will be difficult. Since the SK border is quite well defended with robots etc. I think there is no need to take the mountains at all. We simply can use drones to bomb any gathering and take care of the whole mountain area. The forces there will be trapped. The rest is easy.
Another problem is the military's discipline or moral, and whether the soldiers actually follow the regime or are easily persuaded like the iraquis to give up. I think it's the later but the leadership needs to be cut off first.
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http://arstechnica.com/science/2013/04/polynesian-dna-mysteriously-shows-up-in-a-brazilian-tribe/
Polynesian DNA in brazil! Interesting.
I have been tracking the WHO regarding the new bird flu (H7N9) case.
If it was really coming from the pigeons that's serious trouble, even more so than in the past. It could mean the virus has already been spread all over the place, and it's only a question of time before the worse case happens.