Place the tomatoes (with their juices), broth or water, shallot, garlic, thyme, rosemary (if using), oregano, tomato paste and sugar in a blender (use a high-speed blender, such as a Vitamix, if you have one). Season with salt and pepper. Turn the machine on and gradually increase the speed to high. Blend until completely smooth (give it a good minute or two). If you’re using a Vitamix, continue blending until the soup is hot and steam escapes from the lid plug, about 6 minutes. If you’re using a regular blender, transfer the soup to a pot and bring it to a boil. Reduce the heat to a simmer and cook, stirring occasionally, for 10 minutes.