I know I don't really have any bearing on this conversation, but I thought I would throw my $0.02 in anyway. I don't really know much, so take it for what it's worth.
Pertaining to Korea, I personally think that N. Korea wouldn't have the necessary resources or availability to conduct a full-scale war for very long. They may be able to launch a good initial campaign, but I think politics and questionable allegiance to the country might have an effect on how long they would actually be able to keep it up. I'm not dismissing them as a threat by any means, I just think they're blowing a bit of smoke and showing some muscle. "Hey, look at us. We're still a big enough country to launch our own rockets, tee-hee!" *BOOM, MISSILE DESTROYED* "Aw, shucks, guys...lemme show you just this once how tough I am?"
For that Silent Eagle, I have no idea how important stealth is to the modern Air Force, but I think having all these stealth fighters is pointless if they cost a ton of money and there are only a few of them. Depending on the type of warfare, a bunch of easier to produce, cheaper planes might be better than a few stealthy, expensive to maintain and produce planes.
Remember, I don't know a ton...go easy on me
