  We study the infrared regime of QCD by means of a Wilsonian renormalisation
group. We explain how, in general, the infrared structure of Green functions is
deduced in this approach. Our reasoning is put to work in Landau gauge QCD,
where the leading infrared terms of the propagators are computed. The results
support the Kugo-Ojima scenario of confinement. Possible extensions are
indicated.
