Mediterranean Summer Salad

7 ounces pesto tortellini -- (1 box)

1 6 1/2 ounces solid white tuna -- - in water, drained

2 medium tomatoes -- cut in wedges

1/2 pound green beans -- trimmed

blanched to tender crisp

1 can artichoke hearts -- (14 oz.), - drained

-- and quartered 1/3 cup nicoise olives

2 tablespoons thinly sliced sun-dried -- tomatoes

1 small red onion -- cut in thin rings

2 tablespoons thinly sliced fresh basil

1 small head romaine lettuce

--dressing--

2 tablespoons white wine vinegar

1 teaspoon chopped capers

1 teaspoon anchovy paste or 2 anchovy fillets -- mashed

1 teaspoon Dijon mustard

1/4 teaspoon freshly ground pepper

salt -- to taste

1/2 cup olive oil