  We develop a new systematic procedure for the Regge limit in perturbative QCD
to arbitrary logarithmic order. The formalism relies on the IR structure and
the gauge symmetry of the theory. We identify leading regions in loop momentum
space responsible for the singular structure of the amplitudes and perform
power counting to determine the strength of these divergences. Using a
factorization procedure introduced by Sen, we derive a sum of convolutions in
transverse momentum space over soft and jet functions, which approximate the
amplitude up to power-suppressed corrections. A set of evolution equations
generalizing the BFKL equation and controlling the high energy behavior of the
amplitudes to arbitrary logarithmic accuracy is derived. The general method is
illustrated in the case of leading logarithmic gluon reggeization and BFKL
equation.
