After three years of "zero-COVID" isolation, China is stepping out onto the global stage to a far more unfriendly West and using its growing economic and military power to shape the world to better suit its interests. Finding Perspective: This more assertive footing was on display in March, with Beijing surprising much of the world by brokering a diplomatic deal between Iran and Saudi Arabia, one of the world's most volatile rivalries. Xi has also continued to press ahead with China's peacemaker status for the war in Ukraine after…