Cook chickpeas by prefered method if dry, to roughly al dente.
Clean, dice, and clean yet again the leaks. (This often takes a while.) Set aside.
Finely mince carrot and garlic, Saute together in butter or oil until soft. Add tomato paste, salt, black pepper, stir well and saute another minute, add leaks Sautee until diced leaks are soft. Add stock, chickpeas, remaining spices, bring to a rolling boil. Simmer until flavours meld.
Serves 2-3.