Rinse and chop the leeks fine. Heat oil in a pan. Add leeks and onions and stir until transparent about 5 minutes. Add tomato paste, chili flakes, pepper and salt. Cook for 3 minutes. Add 3 cups water and bring to a boil. Arrange meat and cinnamon sticks over the mixture. Cover the pan and simmer for 45 minutes. Do not stir. Add potatoes and simmer for 30 minutes. Add peas and cook for 15 minutes. Serve with rice or bread.