Ukrainian President Volodymyr Zelenskyy certainly wasn’t the only world leader at this week’s U.N. General Assembly meeting to paint a dire picture of worldwide relations. BEIJING — China on Thursday defended a new border law following criticism by India that it would disrupt the decision of a 17-month-old standoff over disputed territory in the remote Ladakh region that has led to violent clashes. Even if a Russian invasion of Ukraine doesn’t happen within the subsequent few days, the crisis is reaching a critical inflection level. “There is no single silver bullet, however taken collectively, our concerted action is tackling the …