Heat the olive oil in a large stockpot over medium heat.
Cook for about 8 minutes until they are soft.
Add minced garlic and cook for another minute.
Pour in the crushed tomatoes and stir well.
Add clam juice, chicken broth, and water to the pot.
Stir in the diced potatoes, thyme, and bay leaves.
Bring the mixture to a boil, then reduce the heat to a simmer.
Cover the pot and cook for about 30 minutes.
Add the fresh clams to the pot.
Cook until the clams open, about 10 minutes.
Season with salt and black pepper to taste.
Remove bay leaves before serving.