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Mohammad Omar Aly Hassan, Ziyad Yaghi, and Hysen Sherifi are three Americans charged with conspiring to engage in various terrorist activities. The district court convicted them of various counts of conspiring to commit acts of terrorism abroad. Sherifi was also convicted of conspiring to kill members of the uniformed services within the United States.

The defendants had performed various overt acts in furtherance of a terrorist conspiracy, including travelling to the Middle East, participating in weapons trainings and creating a weapons arsenal, raising money for violent jihadist efforts, and posting about their extremist beliefs on social media.

On appeal to the Fourth Circuit, the appellants challenged their convictions on constitutional and evidentiary grounds. They first argued that the convictions were based on constitutionally protected speech (First Amendment). They also made various evidentiary challenges, including a challenge to the admissibility of lay and expert witness testimony, as well as social media videos and videos collected from defendant’s cell phone demonstrating weapon training. Finally, they challenged the sufficiency of the evidence to support their conviction.

The Court dismissed all of the appellant’s challenges and upheld the district court’s conviction on all of the charges.

The Cambodian genocide (1975-1979) saw numerous serious crimes in violation of international law perpetrated by the Khmer Rouge. The Khmer Rouge, in attempting to create a socialist government in Cambodia, took Cambodians from cities and forced their relocation into labor camps in the countryside. Physical abuse, malnutrition, and disease were prevalent. Elites, foreigners, and those considered enemies of the state were executed. It is estimated that almost 2 million people died.

Case 002/01 was limited to the crimes involved in the movement of the populations and executions at Tuol Po Chrey that occurred during the period of the Cambodian genocide. The case found defendants Nuon Chea, the Deputy Secretary of the Communist Party of Kampuchea and Khieu Samphan, former Head of State of Democratic Kampuchea, guilty of crimes against humanity. The defendants were charged for the crimes of murder, political persecution, and other inhumane acts (forced transfer) for the two forced movements of Cambodians from the cities to rural areas and other related crimes. In addition, the defendants were found guilty of the added charges pertaining to the hundreds of executions of Khmer Republic soldiers and officials that occurred at Tuol Po Chrey, executed by Khmer Rouge forces.

Both defendants appealed.

During the Rwandan genocide Athanase Seromba was a Catholic priest at Nyange parish, Kibuye Prefecture. On 13 December 2006, Trial Chamber III of the ICTR convicted the Accused of aiding and abetting genocide and crimes against humanity against Tutsi refugees who had sought refuge at Nyange parish in order to escape attacks. The Trial Chamber also found that Seromba had assisted in the killing of Tutsi refugees as well as in the commission of acts causing serious bodily or mental harm. Thus, the Chamber convicted him of aiding and abetting the crimes of genocide and extermination as a crime against humanity and sentenced him to 15 years of imprisonment.

Both the Accused and the Prosecution appealed the Trial judgment. On 12 March 2008, the Appeals Chamber overturned the conviction of the Accused for aiding and abetting genocide and extermination as a crime against humanity and substituted convictions for committing genocide and extermination as a crime against humanity for his role in the destruction of the church in Nyange Parish causing the death of approximately 1,500-2,000 Tutsi refugees sheltering inside. The Chamber increased Seromba's sentence to life imprisonment.  

Case 002/01 concerns the charges of crimes against humanity against Khieu Samphan, former Head of State of Democratic Kampuchea and Nuon Chea, former Deputy Secretary of the Communist Party of Kampuchea, committed during the forced evacuation of Cambodians to labour camps and for the executions that occurred at Tuol Po Chrey. On 7 August 2014, the Trial Chamber found both accused guilty and sentenced them to life imprisonment. Both the Prosecution and Defence appealed the decision. 

The Supreme Court Chamber on 23 November 2016 issued an appeals judgement reversing some of the convictions and affirming the rest. At issue in the appeal was whether the Trial Chamber correctly defined the elements of the murder and extermination crimes against humanity. The Supreme Court Chamber affirmed the murder definition and charges, while finding that extermination requires that the accused had the direct intent to kill on a large scale. Under this definition, the Chamber reversed the convictions for the crime of extermination. The Chamber found insufficient evidence to support convictions as there were too few witnesses to support key facts beyond a reasonable doubt. Even with this reversal, the Supreme Court Chamber affirmed the life imprisonment sentences of both accused.

Zoran Kupreškić, Mirjan Kupreškić, Vlatko Kupreškić, Drago Josipović, Dragan Papić, and Vladimir Šantić were brought before the ICTY for their roles in the commission of crimes against the Bosnian Muslim population of the village of Ahmići in Bosnia and Herzegovina. In April 1993, the Bosnian Croat forces attacked the village, aiming to remove the Muslim inhabitants through the commission of crimes against them. The attack resulted in the deaths of over a hundred Muslim inhabitants, numerous others were wounded and Muslim houses and mosques were destroyed.

Trial Chamber II was satisfied that the attack on Ahmići was targeting the Muslim civilians with the aim to spread terror among them and assure that they will never return to their homes.

Dragan Papić was acquitted of the charges of persecutions (as a crime against humanity) due to insufficient evidence to sustain that he participated in the attacks.

Trial Chamber II found Zoran Kupreškić, Mirjan Kupreškić, Vlatko Kupreškić, Drago Josipović, and Vladimir Šantić guilty of persecution (as a crime against humanity). Furthermore, Josipović and Šantić were found guilty of murder and inhumane acts (both as crimes against humanity).

Trial Chamber II handed down sentences ranging between 6 and 25 years of imprisonment.