  On the basis of requirements of unitarity and analyticity we analyze the real
and imaginary parts of the $pp^\pm$ scattering amplitudes at recent ultrahigh
energies, 1-100 TeV. The predictions for the region $\sqrt s > 100$ TeV and
${\bf q}^2<0.4$ GeV$^2$ are given supposing the black disk asymptotic regime.
It turns out that the real part of the amplitude is concentrated in the impact
parameter space at the border of the black disk. The interplay of hadron and
Coulomb interactions is discussed in terms of the $K$-matrix function. The $pp$
diffractive scattering cross section at 7 TeV is calculated with Coulomb
interaction taken into account.
