United front: Understanding China and Russia’s deepening alliance

China’s deepening ties with Russia are likely to grow even stronger in coming years as each country reaps key benefits from the other. Yet historical mistrust and differing global aspirations remain potential weaknesses.

Chinese leader Xi Jinping and Russian President Vladimir Putin struck different tones in public remarks last week at their first face-to-face meeting since Russia invaded Ukraine – but left little doubt that their countries’ “no limits” strategic partnership is here to stay.

Despite major Russian battlefield setbacks and Mr. Putin’s mention of China’s “concerns” over Ukraine, the...