Paving The Way -- Steamroller tactics of a constructive nature are being Used by the Russians to win friends and influence people in Afghanistan. At Kabul, the capital, the Reds are using this fleet of steamrollers to pack the many streets they are paving. More persuasive than practical, the streets ring with the clomp of camels' feet but are used by few motor cars, which are scarce in the Asian country. Anyway, the project ought to pave the way for a smooth visit by Soviet Premier Bulganin, who