City of Lights Salad Nicoise

Name: City of Lights Salad Nicoise
Ingredients: 3 tablespoons balsamic vinegar; 1/8 cup apple juice; 2 teaspoons Dijon mustard; 1/4 teaspoon salt; Dash pepper; 6 tablespoons extra-virgin olive oil; 4 red potatoes, scrubbed well, cut into 1-inch wedges, boiled until tender and allowed to cool; 1 pound haricots verts, trimmed, steamed until just tender but still bright green and allowed to cool; 1/4 cup minced fresh parsley leaves (about 1-ounce); 2 (6-ounce) cans tuna, drained; Salt and freshly ground black pepper; 6 hard boiled eggs (peeled while warm) and allowed to cool, cut into 4 wedges lengthwise