  It is shown that the colour dipole approach to hard scattering at high energy
is fully compatible with k_T factorization at the leading logarithm
approximation (in -log x_Bj). The relations between the dipole amplitudes and
unintegrated diagonal and non-diagonal gluon distributions are given. It is
also shown that including the exact gluon kinematics in the k_T factorization
formula destroys the conservation of transverse position vectors and thus is
incompatible with the dipole model for both elastic and diffractive amplitudes.
