The Czech Republic has summoned the Russian ambassador after Moscow published a list of European companies it alleges are involved in supplying drones to Ukraine, including two Czech firms. Former Russian president Dmitry Medvedev, vice-chair of Russia's Security Council, warned on X that companies producing weapons for Ukraine are "potential targets" for the Russian military, adding: "Sleep well, European partners." The Russian Defence Ministry also cautioned that European support for Ukraine's drone capabilities could lead to "unpredictable consequences," prompting Prague to reject the threats and demand a meeting with the ambassador next week.