Russian forces advancing on Kyiv have stalled. Ukraine has refused the demand to surrender Mariupol. But it’s not just Russian regular troops fighting: we look at Russia’s use of mercenaries. Lithuania allowed Taiwan to open a representative office in Vilnius, and is now facing the wrath of China. And included in the exodus of Ukrainians are plenty of four-legged companions. For full access to print, digital and audio editions of The Economist, subscribe here www.economist.com/intelligenceoffer