BEIJING: Chinese leader Xi Jinping spent the first part of this year seeking to play global peacemaker, proposing a cease-fire in Ukraine and helping long-time rivals Saudi Arabia and Iran reach a diplomatic truce.Yet his government’s reaction to the Israel-Hamas conflict is exposing the limits of Xi’s ability to bring lasting solutions to some of the world’s most intractable clashes. Much like his proposal on Russia’s war in Ukraine, China’s initial statement on Sunday sought to avoid naming an aggressor and failed to offer any specific offer of...