Cook your Israeli couscous as per the instructions. Refresh in cold water, drain and set aside.
Roughly cut your cucumber and tomato into ¼ moon segments. Thinly slice your red onion and cut your feta into ¾ inch cubes.
Prepare the lemon vinaigrette. Take a small mixing bowl and whisk together the lemon juice, white wine vinegar, Dijon mustard and sugar. Add the olive oil slowly whilst continuing top whisk quickly.
Take a large mixing bowl and put in the cucumber, tomato, red onion, feta and kalamata olives. Toss through the cooked Israeli couscous. Add the lemon vinaigrette and mix well. Season with salt and pepper and mix through chopped parsley when you are happy with the seasoning.