Belarus's Chief Pursues Dream To Revive the Old Soviet Union
Pres Aleksandr G Lukashenko pursues his dream of making Belarus a model socialist state and merging it into Russia, thus beginning the rebuilding of former Soviet empire, which he might have a good chance of leading; such a union would be hard enough to achieve, given that Russia is moving in capitalist direction while Belarus is entrenched in old-style socialism, and harder still if Belarus's stumbling economy should ground to a complete halt, saddling Russia with the cost of maintaining another 10 million impoverished people; Minsk in 1998 resembles Moscow in late 1980's; photo; map (M)