Secretary of State Michael Pompeo announced on May 21 that the United States would formally submit notice the following day of its intent to withdraw from the Treaty on Open Skies, a post-Cold War trust-building measure signed in 1992 by the US, Russia and 33 other countries. The treaty, which took effect in 2002, allows each state-party to conduct unarmed reconnaissance flights over each others' entire territories to collect intelligence on military forces and activities. In accordance with Article XV, the US withdrawal will take effect six months after formally submitting notice. In a letter addressed to Pompeo, Defense Secretary Mark Esper and President Trump, Representatives Eliot Engel (D-NY) and Adam Smith (D-WA) protest that the withdrawal is in violation of Section 1234 of the Fiscal Year 2020 National Defense Authorization Act, which requires the president to notify Congress at least 120 days before giving formal notice of intent to withdraw from the treaty. (Jurist)

The United States government further complicated the future of peace in Colombia on May 13, adding Cuba to its list of countries that do not cooperate fully with counter-terrorist efforts. The State Department cited Havana's failure to extradite leaders of the National Liberation Army (ELN), Colombia's last active guerilla group. Colombia requested extradition of the ELN leaders after the group claimed responsibility for an attack on a Bogotá police academy in January 2019 that killed 22. Havana responded that the ELN leaders had been brought to Cuba for peace talks with the Colombian government, and that it was obliged to honor terms of dialogue, which included protection from arrest. Colombia's government broke off the talks after the Bogotá blast; civil society groups in Colombia have since been urging both sides to return to the table.

Despite calls for an extension, Colombia's ELN guerillas announced an end to their unilateral ceasefire on April 30, saying that continued government offensives demonstrate that President Ivan Duque is not interested in peace or in combating the COVID-19 pandemic. The decision was met with disappointment by civil society groups and UN Secretary General Antonio Guterres, who in March had called for a "global ceasefire" in response to the pandemic. The UN chief's spokesperson said the month-long ceasefire "was having a positive effect" and that its extension "would have brought hope and a message of peace to communities affected by the conflict."

Yemen's southern separatist group declared self-rule in the parts of the country it controls on April 26, leading to fears of a new and even more dangerous conflict after five years of war. The Southern Transitional Council said in its announcement that it plans to govern several southern provinces, including the de facto capital city of Aden, which the internationally recognized government of President Abd Rabbu Mansour Hadi also claims as its seat.

Yemeni government officials reported the country’s first case of COVID-19 on April 10, shortly after the Saudi Arabia-led coalition announced that it would be observing a two-week unilateral ceasefire, in part to help confront the pandemic. The move was welcomed by the UN, and the office of Special Envoy for Yemen Martin Griffiths said he was working with the warring parties on a "comprehensive initiative" to end the five-year war. But a Houthi rebel spokesperson said coalition air-strikes had continued after the truce's onset, and dismissed the initiative as a "political and media manoeuvre." The rebels were reportedly not consulted before the coalition's April 8 ceasefire declaration, but on the same evening a senior Houthi figure posted on Twitter the details of his group's plan to end the war. All of this comes on the heels of a recent increase in violence, including Saudi air-strikes on the Houthi-controlled capital city of Sana'a, and the shelling of a prison in the province of Taiz that reportedly killed at least five women and one child.

UN Secretary-General António Guterres is calling for warring parties across the world to lay down arms in support of the battle against COVID-19. "The fury of the virus illustrates the folly of war," he said in a March 23 statement. "That is why today, I am calling for an immediate global ceasefire in all corners of the world. It is time to put armed conflict on lockdown and focus together on the true fight of our lives... Silence the guns, stop the artillery, end the air-strikes. It is crucial to help create corridors for life-saving aid, to open precious windows for diplomacy, to bring hope to places among the most vulnerable to COVID-19." (UN News, PBS News Hour)

Gunmen stormed a memorial ceremony honoring a martyred leader of the Hazara Shi'ite minority in Afghanistan's capital March 6. Key politicians including chief executive  Abdullah Abdullah were on hand for the commemoration of the Hazara Mujahedeen commander Abdul Ali Mazari, who was assassinated by the Taliban in 1995. At least 27 people were killed in the attack, and some 30 more wounded. Soon after the massacre, the Taliban issued a statement denying responsibility. Shortly after that, the Islamic State-Khorasan Province (ISKP) claimed the attack in a communique, and also asserted that the actual death toll was 150. An ISIS-claimed attack on the same ceremony last year saw a barrage of mortar fire that killed at least 11 people. The new attack comes just as a tentative "peace deal" with the Taliban is raising concerns for the fate of Afghanistan's ethnic and religious minorities. (Khaama Press, Defense Post, NYT, The Fortress)

More than a year of US-Taliban negotiations bore formal fruit Feb. 29 with the signing in Doha of what is being called a "peace deal" by Washington's envoy Zalmay Khalilzad and Mullah Abdul Ghani Baradar, named as leader of the Islamist group. The pact calls for the US to withdraw its military forces from Afghanistan in 14 months if the Taliban fulfills its commitments under the agreement. Afghanistan's government must release 5,000 Taliban prisoners before March 10, after which the "intra-Afghan" talks are to start, with the aim of negotiating a permanent ceasefire. The signing of the pact follows a one-week "Reduction in Violence" by the Taliban. (Khaama Press, NPR, Al Jazeera)