Russia needs foreign troops if it expects to keep up its war effort in Ukraine through next year. It needs foreign equipment, too. As the wider war on Ukraine grinds toward its fourth year, the stocks of old Cold War weaponry the Kremlin depends on to equip its regiments are running dangerously low.

Ukraine’s allies will look to pressure China over North Korea’s growing support for Russia’s war during a Group of 20 Summit in Brazil, according to people familiar with the matter.