No smoking on Wednesday, please: President Clinton will pointedly refrain from endorsing the tobacco settlement in his long-awaited assessment of the $365 billion fine agreed with the industry, as the agreement is now widely seen as unlikely to survive in its current form. Clinton will fall back instead on the usual broad strokes and exhortations to Congress. Look for a $1.50-per-pack rise in cigarette prices to be suggested. More bad news for Big Tobacco: In Istanbul, the World Health Organization will hash over a proposal aimed at banning all tobacco advertising across Europe by the year 2000, urging each country to come up with its own battle plan. But how long will it be until we see the $10 pack of Marlboros?