Ukrainian President Volodymyr Zelensky and Secretary General of the Council of Europe Alain Berset on June 25 agreed to establish a Special Tribunal for the Crime of Aggression against Ukraine. The agreement, supported by all 46 Council of Europe member states, will establish a tribunal to address crimes of aggression in response to Russia's ongoing invasion. The crime of aggression refers to the decision by a state leader to wage a war that may violate Article 2(4) of the UN Charter, which prohibits the threat or use of force against the territorial integrity or political independence of any state. The tribunal's jurisdiction may also extend to Russian allies participating in the conflict.

In a June 1 covert operation dubbed "Spiderweb," the Security Service of Ukraine (SBU) destroyed or damaged 41 Russian warplanes at four air-bases across the Russian Federation—Belaya (Irkutsk oblast, Siberia), Olenya (Murmansk oblast, in the Arctic), Dyagilevo (Ryazan oblast, near Moscow) and Ivanovo (in the eponymous oblast, also near Moscow). Kyiv claims it has disabled 34% of Russia's strategic bomber fleet in the operation, carried out with over 100 drones launched from trucks hidden across Russian territory. While the Kremlin's top officials, including President Vladimir Putin, have not commented on the Ukrainian operation at all, Russian pro-war propagandists are calling it "Russia's Pearl Harbor," and demanding vengeance. Prominent state TV personality Vladimir Solovyov said on his program that the Ukrainian operation is "grounds for a nuclear attack," and called for retaliatory strikes on the Ukrainian president's office in Kyiv and airfields in NATO members Poland and Romania allegedly used by Ukrainian aircraft. (Kyiv Independent)

The Independent International Commission of Inquiry on Ukraine published a report May 28 declaring Russian drone attacks on Ukrainian civilians in Kherson oblast to be war crimes and crimes against humanity. The commission found that roughly 150 Ukrainian civilians have been killed over the past year as a result of the systematic Russian drone attacks:

Russian media outlets reported May 25 that police in Yekaterinburg stormed an event hosted by the pro-democratic opposition party Yabloko (Apple), aimed at supporting political prisoners. The authorities reportedly detained 10 attendees, who have been subsequently released, with legal action against them by the prosecutor's office now pending.

A Russian military court in Yekaterinburg on May 20 sentenced 27-year-old anarchist Alexey Rozhkov to 16 years in prison for what prosecutors classified as a "terrorist act"—throwing Molotov cocktails at a military recruitment office in March 2022, causing minor damage. The incident, which occurred shortly after the start Russia's full-scale invasion of Ukraine, was one of the earliest in a brief string of such actions across Russia in protest against the war.

A 68-year-old veteran opposition activist was arrested after displaying a sign reading "PUTIN HITLER" from the side of a prominent bridge over the Moskva River in the center of the Russian capital May 6. Grigory Saksonov, also known as Uncle Grisha, climbed over the Bolshoy Moskvoretsky Bridge holding the sign and clad in wetsuit before lowering himself into the water below with a rope. He was pulled out of the river by police and taken away in an ambulance. Saksonov, who has been arrested before in actions in support of late opposition leader Alexei Navalny and had maintained a citizen's memorial on the bridge for slain opposition politician Boris Nemtsov, faces charges of "taking part in an unauthorized action" and "disobeying a police officer." (Novaya Gazeta)

Six Crimean Tatar men received long prison terms from a Russian court April 29, following a trial considered "illegal" by the Ukrainian government and human rights groups. The Southern District Military Court in Rostov-on-Don handed down 14-year sentences to Khalil Mambetov, Refat Seydametov, Osman Abdurazakov, Leman Zekeriayev and Ekrem Krosh. Ayder Asanov was given 11 years. Although accused of "participation in the activities of a terrorist organization" and "preparation for the violent seizure of power" under Articles 205.5 and 30.278 of the Russian Criminal Code, the charges concern their involvement in Hizb ut-Tahrir, a transnational Muslim civic organization that is banned in Russia but is legal in Ukraine and most countries around the world. Additionally, the nonviolent activities in question took place in Crimea, which Russia has illegally occupied and declared annexed since 2014. Kyiv, and governments around the world, recognize Crimea as part of Ukraine. (KHPG, Intent)

The representative body of the Crimean Tatar people has vowed to oppose any international recognition of Russia's annexation of the Crimean Peninsula. The Tatar Mejlis, now sitting in exile in Kyiv, said Apri 22 that any move to recognize Crimea as Russian territory would violate international law.  Refat Chubarov, the body's chairman, asserted in a statement: "Crimea is the homeland of the indigenous Crimean Tatar people and an integral part of Ukraine. Accordingly, no one can decide the fate of Crimea under any circumstances, except for the Ukrainian state and the Crimean Tatar people."