Cook lobsters; extract meat, reserve shells.
Simmer shells in 4 cups water for 20 minutes; strain broth.
Sauté onion, carrots, celery, and garlic in butter.
Add tomato paste, flour, then deglaze with wine.
Add broth, stock, thyme, bay leaf, paprika, and brandy; simmer 20 minutes.
Blend, strain, add cream and half the lobster meat; season.
Serve hot, garnished with lobster meat and chives.