01 - Preheat the oven to 325°F. Position the rack in the lower third of the oven for even heat distribution.
02 - Pat the lamb shanks dry with paper towels. Season generously on all sides with kosher salt and freshly ground black pepper, pressing the seasoning into the meat.
03 - In a large Dutch oven, heat olive oil over medium-high heat until shimmering. Add the lamb shanks and sear on all sides until deeply browned, approximately 8-10 minutes total. Work in batches if necessary to avoid overcrowding. Transfer browned shanks to a plate and set aside.
04 - Reduce heat to medium. Add onion, carrots, and celery to the same pot. Sauté for 5 minutes until softened and lightly golden. Add minced garlic and cook for 1 minute until fragrant, being careful not to burn it.
05 - Stir in ground cumin, coriander, cinnamon, and smoked paprika. Cook for 1 minute, stirring constantly, until the spices are fragrant and toasted.
06 - Pour in the red wine and use a wooden spoon to scrape up any browned bits from the bottom of the pot. Simmer for 2 minutes until the wine is slightly reduced.
07 - Return the lamb shanks and any accumulated juices to the pot. Add pomegranate juice, beef stock, pomegranate molasses, and the bay leaf. Bring the liquid to a gentle simmer.
08 - Cover the pot tightly with a heavy lid or aluminum foil. Transfer to the preheated oven and braise for 2 to 2 1/2 hours. Turn the shanks once or twice during cooking. The meat is done when it pulls away easily from the bone and offers no resistance when pierced with a fork.
09 - Carefully remove the pot from the oven. Transfer the lamb shanks to a serving platter and cover loosely with aluminum foil to keep warm. Discard the bay leaf from the braising liquid.
10 - Skim any excess fat from the surface of the braising liquid. Place the pot over medium heat and simmer, stirring occasionally, until the liquid reduces to a thick, syrupy glaze that coats the back of a spoon, approximately 10-15 minutes.
11 - Return the lamb shanks to the pot with the reduced glaze. Turn them several times to coat thoroughly and heat through for 2-3 minutes. Transfer to serving plates, drizzle generously with the remaining glaze, and garnish with fresh pomegranate seeds and chopped parsley.