2. By "allied" he meant "NATO". There are plenty of "black" people in NATO.
3. Afghanistan was in fact a war zone long before 2001. At its most orderly, under the brutal control of the Taliban, it was a loosely organized state embroiled in a civil war destined to produce a breakaway non-Pashto state. Also: the word "disappeared" means something specific, and you dilute that meaning by using it here. The "disappeared" of Central and South America are so named because they're never heard from again; they're often murdered by death squads.
4. Nothing in the Geneva Conventions speaks to the definition of "kidnapping".