The race for the next United Nations leader has intensified, with four declared candidates facing intense questioning over two days. During his interview, Argentine diplomat Rafael Grossi addressed the global body's effectiveness and future.

The race to become the next leader of the United Nations moved into a higher gear with the four declared candidates facing hours of questions over two days. Top among them: can the UN be made effective again? Rafael Grossi, an Argentine diplomat who heads the International Atomic Energy Agency, struck a downbeat note about the global body’s future during his interview replace Secretary General Antonio Guterres. “This election, or selection, process is so consequential, and this is because we are...