Relativistic aspects of few-body physics

After a brief review of alternative approaches to the relativistic treatment of few-body problems, I discuss (i) recent progress in the study of NN and NNN systems, (ii) a new method for solving the Bethe-Salpeter equation in Minkowski space, (iii) new relativistic treatment of spin 3/2 fields, and (iv) construction of conserved electromagnetic currents in a relativistic optical model.