Cook the pasta in salted boiling water according to package instructions until al dente. Drain, reserving about 1/2 cup of the pasta water. Set both the pasta and pasta water aside.
Heat olive oil in a large skillet over medium heat.
Add the sliced garlic, diced anchovies, and red chili flakes, and saute for a minute or two until garlic softens and starts to turn a light golden brown.
Add the olives and capers, and stir, sauteeing for another 2 minutes.
Add the canned tomatoes, juices and all. If using canned whole tomatoes, break them up with a wooden spoon while stirring. Lower heat slightly, and simmer uncovered for 5-7 minutes until sauce starts to thicken.
Add the drained canned tuna, breaking up into flakes, along with the dried basil, dried oregano, salt, and some freshly ground black pepper. Taste and adjust seasoning.
Add the cooked pasta, and a splash of pasta water to loosen, about 1/3-1/2 cup. Stir to toss the pasta well in the sauce, and enjoy immediately. Optionally, top with extra red chili flakes before serving and some freshly grated parmesan cheese.