  The present status of the diquark model for exclusive reactions at moderately
large momentum transfer is reviewed. That model is a variant of the
Brodsky-Lepage approach in which diquarks are considered as quasi-elementary
constituents of baryons. Recent applications of the diquark model, relevant to
high energy physics with electromagnetic probes, are discussed: electromagnetic
form factors of baryons in both the space-like and the time-like region,
two-photon annihilations into proton-antiproton pairs as well as real and
virtual Compton scattering.
