Russia on April 24 vetoed a UN Security Council resolution sponsored by the US and Japan which called on all nations to contribute to the peaceful use of outer space and to prevent a dangerous nuclear arms race. The resolution urged nations "to refrain from actions contrary to that objective and to the relevant existing treaties in the interest of maintaining international peace and security."

The California-based Center for Truth & Justice (CFTJ) published a report April 18 purporting that acts of genocide have been committed in the contested Nagorno-Karabakh region and Armenian border provinces, and calling upon the International Court of Justice to open an investigation. The CFTJ claims that Azerbaijani security forces have evicted ethnic Armenians from their native lands in these areas since the war of 2020, documenting instances of torture, arbitrary detentions and extrajudicial killings. 

A US judge on April 12 dismissed a group of civil lawsuits accusing Libyan military leader Khalifa Haftar of war crimes. District Judge Leonie Brinkema said she had no jurisdiction to preside over a case concerning crimes committed in Libya—even though Haftar has US citizenship and lived for more than 20 years in the DC suburbs of northern Virginia. The ruling came as a reversal in the case; in 2022, Brinkema had entered a default judgment against Haftar after he refused to sit for scheduled depositions. Haftar subsequently sent lawyers to argue on his behalf, and the default judgment was put off. 

The European Court of Human Rights (ECHR) ruled April 9 that Russia's occupation of two breakaway regions in Georgia systematically violated human rights. The ECHR found that Russia violated multiple sections of the European Convention on Human Rights, including the right to life under Article Two, the prohibition of torture under Article Three, the right to liberty under Article Five, and the right to respect for private and family life under Article Eight. 

The Russian Foreign Ministry has called for an investigation into a drone strike in Moldova's breakaway Transnistria region, condemning the attack as "yet another provocation" in the enclave. The "kamikaze" strike targeted a Transnistrian defense ministry installation April 5, resulting in damage to a radar station. The targeted facility lies six kilometers from the border of Ukraine. Russian Foreign Ministry spokesperson Maria Zakharova charged the attack was "aimed at aggravating the already tense situation around Transnistria." She stated that Russia expect "a thorough investigation into all the circumstances of what happened," adding: "We trust that those behind this reckless action will fully realize its dangerous consequence."

Tajikistan's Foreign Ministry spokesperson Shokhin Samadi on April 6 denied claims by Secretary of the Russian Security Council Nikolai Patrushev that Ukraine has been recruiting mercenaries for its military in the country's territory. Patrushev charged that Kyiv's embassy in Dushanbe, the Tajik capital, has been recruiting Tajikistan nationals to join the International Legion of the Ukrainian army, in return for a pathway to Ukrainian citizenship. The comments were made during a meting of the Shanghai Cooperation Organization (SCO) in Kazakhstan.

The European Commission has expressed regret over Slovakia dissolving its Special Prosecutor's Office without safeguards to ensure the continuity of criminal investigations in the country. The office was officially dissolved on March 20 after its dissolution was approved in a fast-track procedure by the Slovak parliament, despite nationwide protests. Thousands of protesters gathered in front of the parliament building in Bratislava on Feb. 7, with mobilizations also held that day in 30 other Slovak cities and towns. 

Amnesty International states in a report issued March 18 that during 10 years of illegal occupation, Russia has attempted to reshape the demography of the Crimean Peninsula. It has also suppressed Ukrainian and Crimean Tatar identities through "restrictions on education, religion, media, representative institutions, [the] judicial system, and cultural celebrations."