in a large stewpot, brown lamb and first set of onions. add tomato paste and cook for 5 minutes stirring frequently. add tomatoes, spices, green peppers, and reduce heat to simmer. after 15 minutes, add the vegetables plus enough water to come within 3 inches of their tops. cook until meat and vegetables are tender. serve on individual plates over couscous. garnish with green onion, parsley and lemons.