A Russian air strike on Ukraine on Sunday shook a fragile consensus among the Group of 20 major economies drafting their joint statement at an annual leaders summit in Rio de Janeiro, three diplomats familiar with the talks told Reuters. European diplomats are now pushing to revisit previously agreed language on the topic of global conflicts after Russia unleashed its largest air strike on Ukraine in almost three months. The United States responded by lifting prior limits on Ukraine’s use of U.S.-made weapons to strike deep into Russia.