Heat up a pan on high heat. Add in the olive oil, garlic, and capers, then sauté for 30 seconds until fragrant.
Add in the chopped tomatoes and olives. Sauté this for about five minutes until the tomatoes have broken down and softened. Then add in the salt and tomato paste.
Toss the cooked pasta in the pan with the sauce, until the sauce clings to the spaghetti. Garnish with parsley and serve hot.