During the Soviet invasion, occupation and ultimate attempt
at regime installation in Afghanistan in 1979, the new American Administration,
as many know, supported and supplied the Mujahedeen there with weapons and
various other supports in its effort to dislodge the Soviets. It worked, in the
end, but the country then degenerated into chaos until the Taliban (mostly comprised
of former Mujahedeen) took over (and the rest is history; again, bit was the
hand that was fed). In science, there is the axiom that “every action has an
equal and opposite reaction;” so too in political spheres; that is, your
actions often result in an equal and opposite reaction (from that which you
sought).