How To make Barbequed Swordfish with Black Olive Cucumber Salad

4 6 ounce swordfish fillets (steaks) -- about 1-inch thick
4 ounces basic tomato sauce
2 tablespoons sugar
2 tablespoons balsamic vinegar
1 tablespoon hot chili flakes
1 cup black olives such as Gaeta
1 pound English cucumbers (1 long one)

sliced
2 plum tomatoes :

stem removed
2 tablespoons extra virgin olive oil

plus 1/2 cup
1 tablespoon red wine vinegar :

plus 6 T
2 tablespoons fresh oregano leaves
3 tablespoons Dijon mustard
1/4 cup chives -- chopped
Salt and pepper to taste
Preheat barbecue with good hot fire. Rinse and pat dry swordfish.
In a small mixing bowl, mix tomato sauce, sugar, balsamic, chilis and let stand. Into another mixing bowl, add Gaeta olives and cucumber. Cube plum tomatoes into 1/8-inch cubes and add to cucumber mixture. Add 2 tablespoons extra virgin oil, 1 tablespoon red wine vinegar and 2 tablespoons oregano leaves and mix well. Do not season until ready to serve or vegetables will wilt.
In a blender, mix Dijon mustard, 1/2 cup extra virgin olive oil and 6 tablespoons red wine vinegar until smooth. Remove and stir in chopped chives and set aside. Brush swordfish steaks with barbecue sauce and season with salt and pepper. Cook 3 minutes on first side and flip over. Spoon 1 ounce barbecue sauce over each steak and finish cooking without turning about 4 more minutes. Meanwhile, divide cucumber salad among 4 plates. When swordfish is finished, lean one steak on each plate over salad. Drizzle with chive sauce and serve.