  One of the key elements in the testing of the Standard-Model description of
CP violation through $B$-meson decays is the direct determination of the angle
$\gamma$ of the unitarity triangle in a variety of ways. We give a brief
overview of the implications of the current $B$-factory data for
flavour-symmetry strategies, and discuss new, theoretically clean methods
employing pure tree decays of neutral $B_{d,s}$ mesons.
