Bolivian President Evo Morales announced March 26 that his government will bring suit against Chile before the International Court of Justice seeking compensation for using the waters of the disputed Río Silala. Two days later, he made a visit to the river in Potosí department, where he declared, "Silala is not an international river." Chile's President Michelle Bachelet promptly responded that Bolivia has recognized the Silala as an international river for more than 100 years and said she would counter-sue before the World Court if Bolivia in fact brought a case. Originating in the high desert plateau of Bolivia's remote southeast, the Silala flows into Chile through a canal built for mining operations over a century ago. In 2009 Chile and Bolivia announced an accord to resolve the conflict, which would cut Chile's use of the Silala's water by 50%. But the pact was never formalized, and local communities in impoversihed Potosí demanded retroactive payment for Chile's past use of the waters.

International environmentalists are condemning Vancouver-based Eco Oro Minerals' announcement that it will initiate arbitration against Colombia over its new policy to protect sensitive highland ecosystems. Eco Oro has stated its intention to sue Colombia under the investment chapter of the Canada-Colombia Free Trade Agreement over suspension of its proposed Angostura gold mine in Santurbán, Santander department, seeking "monetary compensation for the damages suffered." The case concerns a ruling of Colombia's Constitutional Court last month that revoked all licenses granted to companies that sought to carry out mining activities on páramos, the high alpine meadows that protect watersheds. The company maintains the Colombian government did not adequately demarcate the Santurbán paramó before giving a license for the project, which has received backing from the World Bank’s International Finance Corporation.

Colombia's government and FARC rebels missed the March 23 deadline for the signing of a peace agreement. The date was set when President Juan Manuel Santos and FARC leader "Timochenko" met in Havana in September. But significant steps toward peace have been taken over the past six months. In what Timochenko called an "historic, unprecedented" meeting until recently "unthinkable," he shook hands with US Secretary of State John Kerry during President Obama's trip to Cuba this week. "We received from him in person the support for the peace process in Colombia," said Timochenko. (Colombia Reports, March 23; Colombia Reports, March 22) The FARC quickly followed up with a statement calling on the State Department to remove the guerilla army from its list of "foreign terrorist organizations." (AFP, March 23)

President Obama's visit to Argentina this week coincided with the 40th anniversary of the 1976 military coup that opened the country's "Dirty War," in which thousands of leftist dissidents were killed or "disappeared" during a seven-year dictatorship. Obama made note of the occassion, joining with Argentine President Mauricio Macri to visit the Monument to the Victims of State Terrorism at Remembrance Park in Buenos Aires. But the visit was boycotted and protested by some advocates of justice for the "Dirty War" victims. "We will not allow the power that orchestrated dictatorships in Latin America and oppresses people across the world to cleanse itself and use the memory of our 30,000 murdered compatriots to strengthen its imperialist agenda," said a statement by Myriam Bregman of the Center for Human Rights Professionals and other advocates. Nora Cortiñas of the Mothers of the Plaza de Mayo said: "I lament that Marci has accepted that the executive of the United States come during these days. It is inappropriate, a provocation."

The US military killed "dozens" of AQAP fighters in an air-strike that targeted a training camp in western Yemen March 22. The Pentagon claims that the strike—on a camp in Hajr, in mountains west of the port city of Mukallah—will deny AQAP "safe haven," but the air campaign waged by the US against the al-Qaeda franchise since 2009 has done little to halt its advance. Since launching an offensive last year, AQAP has gained control of at least eight cities and towns in Yemen, including the provincial capitals of Hadramout (Mukallah), Abyan (Zinjibar) and Lahj (Houta). (See map.) (Long War Journal, BBC News, March 23)

The Supreme Court of Canada announced March 10 will review two decisions of the National Energy Board related to aboriginal consultation. One case challenges a board decision to allow seismic testing in the waters off the east coast of Baffin Island, which is opposed by the Inuit village of Clyde River, Nunavut. The other is an appeal by the Chippewa of the Thames First Nation in southern Ontario of a ruling that approved the expansion of Enbridge corporation's Line 9 pipeline from the Alberta oil sands to a Montreal refinery. Both Clyde River and the Thames First Nation say they were not adequately consulted on the respective projects. Under Canada's Constitution, the Crown has a "duty to consult" and accommodate, wherever possible, indigenous peoples on any actions that may adversely affect their aboriginal and treaty rights. (Al Jazeera, March 20; CTV, March 10)

Peruvian journalist Walter Chávez, widely named in the press as a key campaign advisor to Bolivian president Evo Morales, was arrested in Argentina March 16, and may face extradition to Peru, where he faces charges of having served as an operative of the Tupac Amaru Revolutionary Movement (MRTA), a now-defunct guerilla group. Chávez was granted political asylum in Bolivia in 1992, and worked on Morales' campaigns between his election in 2005 and his most recent re-election in 2014. Bolivia refused a Peruvian extradition request in 2007. Chávez was arrested in Argentina's northern city of Salta, apparently having crossed the border some three weeks earlier. (Peru.com, March 17; InfoBae, Argentina, Eju!, Bolivia, March 16) In response to the controversy, Bolivia's cabinet chief Carlos Romero denied that Walter Chávez had ever been an official advisor, saying he did not work out of the presidential palace but "particiapted voluntarily" in Morales' campaigns. (Terra, March 17)

In Brazil's biggest protests since the end of the military dictatorship in 1985, thousands have poured into the streets in cities cities across the country to denounce President Dilma Rousseff's appointment of her predecessor and political mentor, Luiz Inacio "Lula" da Silva, as chief of staff. Days of nationwide demonstrations reached a climax as Lula was sworn in on March 17. In Brasilia, riot police fired pepper spray to disperse protesters who massed outside the presidential palace, chanting "Dilma out!" Demonstrators say Rousseff transparently appointed Lula in order to give him immunity as he comes under investigation in a corruption scandal at the state oil company Petrobras.