  We present for the first time Very-Long-Baseline Interferometry images of the
radio galaxy Cygnus A at the frequency of $86$ $\rm GHz$. Thanks to the high
spatial resolution of only ${\sim}200$ Schwarzschild radii ($R_{\bf S}$), such
observations provide an extremely detailed view of the nuclear regions in this
archetypal object and allow us to derive important constraints for theoretical
models describing the launching of relativistic jets. A pixel-based analysis of
the jet outflow, which still appears two-sided on the scales probed, was
performed. By fitting Gaussian functions to the transverse intensity profiles,
we could determine the jet width in the nuclear region. The base of the jets
appears wide. The minimum measured transverse width of ${\sim} (227\pm98)$
$R_{\bf S}$ is significantly larger than the radius of the Innermost Stable
Circular Orbit, suggesting that the outer accretion disk is contributing to the
jet launching. The existence of a faster and Doppler de-boosted inner section,
powered either from the rotation of the inner regions of the accretion disk or
by the spinning black hole, is suggested by the kinematic properties and by the
observed limb brightening of the flow.
