HEAT olive oil in a small sauce pot; add garlic and sauté for one minute (do not brown). Add bell peppers and sauté until al dente. Add olives and capers and stir. Add red wine and bring to a boil. Add remaining ingredients except basil.
BRING to a boil, reduce to low heat and simmer for approximately 30 minutes. Add basil to sauce and stir well; remove Siena sauce from heat.