MOSCOW/LONDON (Reuters) -Lego is closing its business in Russia indefinitely and laying off its 90 Moscow-based employees, owing to “extensive disruption” in the country, the Danish toymaker said on Tuesday. Lego has terminated its contract with franchisee Inventive Retail Group (IRG) which owned and operated 81 stores on Lego’s behalf. IRG, which also operated shops in Russia for Western brands such as Nike and Samsung, said earlier on Tuesday that the contract with Lego had been terminated. “LEGO Group has decided to indefinitely cease commercial operations in Russia given the continued exte…