Two minor points here:
First, I think you'd find that irregular warfare, conducted largely by proxy, was the dominant form of conflict during the Cold War. It's not as new as it's sometimes made out to be, or as drastic a shift as it's sometimes made out to be.
Second, the assertion that the current security is more complex than the Cold War security environment is highly debatable. Different, yes, but not necessarily more complex.
In general - and others will have far more to say on this - I'd point out that after reading this I still don't know what the problem you intend to address is. You'll want to delineate it clearly, and narrow it down a good deal. There's a great deal that's been said, written, and done, and too big a bite can be hard to chew.
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