  A central idea in strongly correlated systems is that doping a Mott insulator
leads to a superconductor by transforming the resonating valence bonds (RVBs)
into spin-singlet Cooper pairs. Here, we argue that a spin-triplet RVB (tRVB)
state, driven by spatially, or orbitally anisotropic ferromagnetic interactions
can provide the parent state for triplet superconductivity. We apply this idea
to the iron-based superconductors, arguing that strong onsite Hund's
interactions develop intra-atomic tRVBs between the t$_{2g}$ orbitals. On
doping, the presence of two iron atoms per unit cell allows these inter-orbital
triplets to coherently delocalize onto the Fermi surface, forming a fully
gapped triplet superconductor. This mechanism gives rise to a unique staggered
structure of onsite pair correlations, detectable as an alternating $\pi$ phase
shift in a scanning tunnelling Josephson microscope.
