Zesty Tortilla Soup

In a large saucepan, cook onions and garlic in oil until translucent. Add cumin, vegetable juice, tomatoes, chicken broth and chicken chunks and bring to a boil. Reduce heat, and simmer until chicken is cooked through, cut to test. Divide green onions into 6 - 9 bowls. Top with a handful of cheese. Ladle soup over the top into bowls. Top with tortilla strips, cilantro and a spoonful or two of sour cream, if desired.