Grilled Tuna with Mediterranean Chopped Salad

Name: Grilled Tuna with Mediterranean Chopped Salad
Ingredients: 8 ounces small red potatoes, peeled; Coarse salt; 4 ounces haricots verts, stems trimmed; 12 ounces cherry tomatoes, quartered; 3 anchovy fillets, finely chopped; 12 Kalamata olives, pitted and thinly sliced; 1/4 cup thinly sliced fresh basil; 2 tablespoons extra-virgin olive oil; 2 tablespoons fresh lemon juice; Freshly ground pepper; 4 small yellowfin tuna steaks (about 2 1/2 pounds total); Sliced crusty bread, for serving