Pour hot water over couscous and let sit until absorbed and cool.
In a small bowl mix the chick peas, red pepper, green onions, carrot, olives and feta cheese.
In a blender purée the mint leaves, garlic, mustard and sugar. Add the vinegar and olive oil while the machine is running.
In a large bowl combine the cooled couscous, vegetables and dressing. Serve cooled or at room temperature. Garnish with more fresh mint leaves if desired.