By Mimosa Spencer PARIS (Reuters) – The world’s leading luxury brands said on Friday that they planned to temporarily close stores and pause business operations in Russia. Birkin bag maker Hermes and Cartier owner Richemont were the first firms to announce such moves, followed by LVMH, Kering and Chanel. Doing business in Russia has become complex since Russia’s invasion of Ukraine, which prompted the United States, Britain and the Europe Union to impose sweeping sanctions. “Given our increasing concerns about the current situation, the growing uncertainty and the complexity to operate, Chanel…