Space warfare Document

heres an interesting document on space warfare.

http://stinet.dtic.mil/cgi-bin/GetTRDoc?AD=A421942&Location=U2&doc=GetTRDoc.pdf

I thought there was some sort of treaty agreeing not to use space or the Moon for warfare?

Has this been verified as a valid document?

http://en.wikipedia.org/wiki/Outer_Space_Treaty

The Outer Space Treaty, signed during the Space Race between the USSR and the USA.