In a large saute pan, heat oil over high heat until hot, but not smoking. Add eggplant and cook, stirring, until well-seared and quite soft, 5-7 minutes. Reduce heat to medium, add onion and cook, stirring for 2-3 minutes. Add garlic and continue to stir for 1 minute. Add in tomato juice and pomegranate syrup and bring just to a boil, then reduce heat to low and simmer, stirring occasionally, for 5 minutes. Remove from heat, season with salt and pepper to taste. Stir in mint and pomegranate seeds and serve hot or cold with crackers, bread, or over chicken or fish.