We derive the high energy asymptotic behavior of gauge boson
production cross section in a spontaneously broken SU(2) gauge theory
in the next-to-next-to-leading logarithmic approximation. On the
basis of this result we obtain the logarithmically enhanced two-loop
electroweak corrections to the differential cross section of W-pair
production at ILC/CLIC up to the second power of the large logarithm.