  We review several developments in the formulation of QCD provided by the GZ
action. These include the GZ-action at finite temperature, the relation of the
horizon condition and the Kugo-Ojima confinement criterion, the relation of the
horizon condition and the dual-Meisssner effect, the alternative derivation of
the GZ action provided by the Maggiore-Schaden shift, and the spontaneous
breaking of BRST symmetry. We conclude with a proposal for the definition of
physical states in the presence of BRST breaking.
