Key word here is offensive military unit, like a bomber squad or tank devision. You should not send out this kind of units to allies, neutral states or neighbors, not matter how "valuable" it would be in trade negotiations. Its to the benefit of all that on-line communication is restored to peace, rather than a free-for-all combat zone.
Of the 3 changes suggested by Schneier, this I feel is the most important change that internationally need to happen. Since NSA is the biggest offender here, fixing that actor would encourage other nations to do the same.