Cut green beans into 2-inch pieces on an angle. Place in a skillet. Add water, salt, to taste and cook beans 5 minutes, then drain beans. Place the skillet back on stove and add vegetable oil. Heat pan over high heat until oil smokes. Add the beans and red peppers and stir-fry 2 minutes. Add the soy and sesame oil and transfer to a serving dish. Garnish with sesame seeds and serve.