China kicked off its largest-ever military parade on Wednesday, a show of its growing firepower and geopolitical clout as President Xi Jinping seeks to cast Beijing as the custodian of a post-U.S. international order. Flanked by Russia's Vladimir Putin and North Korea's Kim Jong Un, a smiling Xi strolled up a red carpet to take his seat for the lavish event at Tiananmen Square to mark 80 years since Japan's defeat at the end of World War Two. More than 50,000 spectators packed into stands joined a vast choir singing patriotic songs as the dignitaries took their seats on the...