  Disk winds and jets are ubiquitous in active galactic nuclei (AGN), and how
these two components interact remains an open question. We study the radio
properties of a radio-intermediate quasar III Zw 2. We detect two jet knots J1
and J2 on parsec scales, which move at a mildly apparent superluminal speed of
$1.35\,c$. Two $\gamma$-ray flares were detected in III Zw 2 in 2009--2010,
corresponding to the primary radio flare in late 2009 and the secondary radio
flare in early 2010. The primary 2009 flare was found to be associated with the
ejection of J2. The secondary 2010 flare occurred at a distance of $\sim$0.3
parsec from the central engine, probably resulting from the collision of the
jet with the accretion disk wind. The variability characteristics of III Zw 2
(periodic radio flares, unstable periodicity, multiple quasi-periodic signals
and possible harmonic relations between them) can be explained by the global
instabilities of the accretion disk. These instabilities originating from the
outer part of the warped disk propagate inwards and can lead to modulation of
the accretion rate and consequent jet ejection. At the same time, the wobbling
of the outer disk may also lead to oscillations of the boundary between the
disk wind and the jet tunnel, resulting in changes in the jet-wind collision
site. III Zw 2 is one of the few cases observed with jet-wind interactions, and
the study in this paper is of general interest for gaining insight into the
dynamic processes in the nuclear regions of AGN.
