June 3 marks the hundredth day of Russia's full-scale invasion of Ukraine. Meduza's sources say that the Kremlin is trying to play down this fact, but Russian officials continue to assure that everything is going to plan. After three months of intense fighting, Russian forces have managed to occupy large swaths of the Kherson and Zaporizhzhia regions in southern Ukraine, but were driven out of the Kyiv region. In mid-April, Russian Defense Minister Sergey Shoigu and Foreign Minister Sergey Lavrov announced that the "second stage" of the invasion was underway. This bloody "battle for the Donbas" remains ongoing. Throughout the invasion, the Ukrainian army has not only defended the country, but also launched counter offensives. For insight into what these 100 days of all-out war have meant for Ukraine and its armed forces, Meduza turned to military expert Mykhailo Samus from the Kyiv-based Center for Army, Conversion, and Disarmament Studies (CACDS). This interview has been edited and abridged for length and clarity.