A panel of experts released on April 24 its second and last report (PDF) on its inquiry into the 43 undergraduate students from a teachers college in Ayotzinapa who went missing in Iguala, Guerrero, in 2014, stating that the Mexican government has hampered the investigation. Consisting of Latin American lawyers and human rights activists, the panel of experts appointed by the Inter-American Commission on Human Rights found the following: some of the suspects had been tortured by government security forces; the integrity of evidence had been compromised in the case; new evidence showed a greater role by federal security forces in the 2014 events; a lack of investigation into high-level officials; a lack of investigation into phone records from that night; and "sclerotic bureaucracy" throughout the justice system. The experts brought together the events leading up to the disappearances of the students through witness testimony and ballistic tests; they concluded that "the join action [of the attackers and officials] shows a coordinated modus operandi..." 

President Barack Obama is set to announce plans to send 250 more US troops to Syria, media accounts indicate—but they are vague on exactly which forces the troops will be backing. There are already some 50 Pentagon special operations troops embedded with the Kurdish-led Syrian Democratic Forces (SDF), but accounts say the new effort will be to bring more Arab militias into the fight against ISIS. The SDF itself was created to ally the Kurdish YPG militia with Arab factions, to give the US-backed anti-ISIS forces greater legitimacy with the Syrian opposition and Arab states. So will the new effort be to bring more Arab fighters under the SDF umbrella, or to have US forces backing Arab factions that resist allying with Kurds?

John F. Sopko, the Pentagon's Special Inspector General for Afghanistan Reconstruction, gave a sobering assessment last week of the situation in the country 15 years after the fall of the Taliban. Corruption is endemic and security practically non-existent. More than 700 schools have been closed in recent months due to the ongoing insurgency. And despite at least $7 billion in counter-narcotics spending, opium production hit 3,300 tons in 2015—exactly the same level it was in 2001 when the US invaded. "Fifteen years into an unfinished work of funding and fighting, we must indeed ask, 'What went wrong?'" Sopko said in an address at at Harvard University on April 7, CNN reported.

Electoral authorities in Sudan say the results are in from the April 11-13 referendum on the administrative boundaries of strife-torn Darfur, with 97% voting to maintain its current five-state status. But the vote was boycotted by the civil and armed opposition alike in Darfur. Students at El-Fasher University in North Darfur protested the vote, and similar rallies were held in at least three IDP camps in Central Darfur. The US State Department issued a statement saying the referendum was unlikely to be fair, asserting that "insecurity in Darfur and inadequate registration of Darfuris residing in internally displaced persons (IDPs) camps prohibit sufficient participation." The statement drew diplomatic protests from Sudan's regime, which supported maintaining the five-state status quo and posed the referendum as fulfilling terms of the 2011 Darfur peace agreement signed with some rebel groups, the Doha Document for Peace in Darfur.  But rebel factions that did not sign on remain in arms, and even as the vote was prepared violence has again escalated in Darfur.

The US Court of Appeals for the District of Columbia Circuit on April 21 upheld a district court's dismissal of a Freedom of Information Act (FOIA) request for information about the US government's use of drones for "targeted killings." The American Civil Liberties Union (ACLU) sought to obtain legal memoranda on drone use as well as compilations of data on government strikes that can detail who intended targets were, locations of strikes, and how many people have been killed, among other information. The Central Intelligence Agency (CIA) argued that the documents are exempt from disclosure, and the lower court granted summary judgment in their favor. The appeals court agreed with the CIA that the requested documents were properly classified and exempt from FOIA requests because they pertain to intelligence activities and/or foreign activities of the US. The court also agreed with the CIA that there we no "segregable portions" of the documents which could be disclosed.

The planned São Luiz do Tapajós mega-dam in Brazil's Amazonian state of Pará received a significant setback April 20 when its license was suspended by the Brazilian Institute of the Environment and Renewable Natura Resources (IBAMA). The move came in response to a report published by Brazil's National Indian Foundation (FUNAI), declaring "the infeasibility of the project from the perspective of an indigenous component." Some 10,000 Munduruku people live along the Rio Tapajós, and the flooding of their territory by the dam would necessitate their relocation—which FUNAI found to be in violation of Brazil's constitution. In the report, FUNAI recommends the demarcation of 1,780 square kilometers of indigenous Munduruku territory, known as Sawré Muybu, in the area that would be impacted by the project. The 8,000-megawatt São Luiz do Tapajós dam would be Brazil's second largest, after the controversial Belo Monte plant, which finally began operating this week after years of protests by the Munduruku and other peoples. (Mongabay, The Guardian, April 22)

A force of Ethiopian troops crossed into South Sudan on April 20 to launch a joint offensive with the Juba government against ethnic Murle militia fighters who staged a bloody raid into Ethiopia's Gambela region a week earlier. The Murle militiamen attacked several villages and massacred over 200 civilians of the Nuer ethnicity in the raid, and abducted some 100 children as well as stealing some 2,000 cattle. News reports initially described the incursion as a cattle raid, but the militiamen were said to be armed with AK-47s and wearing uniforms. Hundreds of thousands of South Sudanese, mainly Nuer, have fled to Gambela to escape armed conflict. The raid has heightened fears of the South Sudan war spilling into Ethiopia. (Ethiopian Herald via AllAfrica, DW, April 22; Radio Tamazuj, Sudan, April 20)

Thousands marched in Cairo on April 15 to protest President Abdel Fattah al-Sisi's decision to turn two disputed islands over to Saudi Arabia. Crowds chanted slogans such as "Sisi – Mubarak," "We don't want you, leave," and "The people want the downfall of the regime"—the iconic slogan of the Arab Revolution. Security forces responded with tear-gas; at least 25 were detained and are being held on charges of violating Egypt's controversial anti-protest law. More protests are planned for this weekend, and on April 22 security forces carried out pre-emptive arrests of noted activists in an apparent effort to head them off. Cafes in downtown Cairo were raided and activists seized from their homes, prisoners' rights group Freedom for the Brave said in a statement on Facebook. Pre-emptive arrests were also reported in Alexandria and in Gharbeyyia governorate.