CANADA has proposed the strongest U.N. sanctions yet against Haiti's military rulers: a trade embargo that would include just about everything except food and medicine . . . A FIRE that started in a kitchen razed 700 densely packed shanty houses in northern Rangoon, leaving more than 5,000 people homeless . . . CHINESE police have executed six people on charges including murder, rape and hooliganism . . . TEN CREW members were feared dead Tuesday after an oil tanker exploded and broke in two off Hong Kong . . . THE HUNGARIAN government has banned animal fights and any other staged events in which animals can be killed or injured.