Heat oil in large pot over medium heat.
Brown pork cubes on all sides completely.
Add diced onions to the same pot.
Cook onions until they become soft and translucent.
Add minced garlic and cook for one minute.
Stir in cumin and oregano for fragrance.
Add chopped green chiles to the mixture.
Pour in chicken broth and diced tomatoes.
Bring mixture to a rolling boil quickly.
Reduce heat and simmer for 90 minutes.
Season with salt and pepper to taste.
Serve hot in bowls with desired toppings.