After completing the conquest of Lugansk province in eastern Ukraine, Russian President Vladimir Putin ordered his troops to rest and issued a sort of challenge to Ukrainian NATO supporters. “Today we learn that they want to defeat us on the battlefield,” he said on Thursday. “What can you say? Let them try. President Biden responded to Mr. Putin a day later in exactly the right way: announcing an additional military aid package for Kyiv worth $400 million. , which included four new HIMARS long-range rocket launchers. This will bring the total number of US HIMARS transferred to Ukraine to 12; the German and British governments have promised similar systems.