Pork and Sauerkraut Goulash

Name: Pork and Sauerkraut Goulash
Ingredients: 2 lbs pork butt (cubed); 1⁄2 cup flour (for dredging); 1⁄4 cup olive oil; 4 medium onions (finely chopped); 5 garlic cloves (finely chopped); 1 small green pepper (finely chopped); 2 tablespoons sweet paprika (or to taste); 2 tablespoons hot paprika (or to taste); 2 cups chicken broth; 1 (28 ounce) can diced tomatoes; 4 cups sauerkraut (rinsed, squeezed dry); 1 pinch sugar; 1 bay leaf; salt and pepper (to taste); 1 pint sour cream (for garnish); 3 tablespoons parsley (for garnish)