  We study the pairwise interactions of drops in an applied uniform DC electric
field within the framework of the leaky dielectric model. We develop
three-dimensional numerical simulations using the boundary integral method and
an analytical theory assuming small drop deformations. We apply the simulations
and the theory to explore the electrohydrodynamic interactions between two
identical drops with arbitrary orientation of the their line of centers
relative to the applied field direction. Our results show complex dynamics
depending on the conductivities and permittivities of the drops and suspending
fluids, and the initial drop pair alignment with the applied electric field.
