The 2015 Review Conference of the Parties to the Treaty on the Non-Proliferation of Nuclear Weapons (NPT) concluded at the UN in New York on May 22 without approving a final document—due to US blocking of a provision on creating a Middle East nuclear-free zone. The US blocked the document, saying Egypt and other Arab states tried to "cynically manipulate" the process by setting a March 2016 deadline for Middle East nations to meet on the proposal—including Israel. The US was joined by the UK and Canada in blocking the document. Israel's Prime Minister Benjamin Netanyahu thanked US Secretary of State John Kerry for blocking. Israel of course had no vote, as a non-signatory to the NPT. (AP, Interfax, The Guardian, May 23; Xinhua, May 22)

China's Premier Li Keqiang, on a tour of South America, is plugging a transcontinental railway project that would cut through the heart of the Amazon rainforest. Last year, President Xi Jinping signed a memorandum on the project with the governments of Brazil and Peru, and Li is now pressing for an actual feasibility study. According to an interactive map on Diálogo Chino website, the "Twin Ocean Railroad" or "Transcontinental Railroad" would start at Porto do Açu in Rio de Janeiro state, and cut through the Brazilian states of Goiás, Mato Grosso and Rondônia. It would terminate at Puerto Ilo in Peru's southern Moquegua region.

ISIS forces are in control of most of Moammar Qaddafi's hometown of Sirte, and this week sucessfully repulsed an effort to retake the town by the Misrata-based 166 Brigade, which is aligned with the Libya Dawn rebel coalition that holds power in Tripoli. The 166 Brigade was reportedly pushed to the west after launching an attack on Nufaliya, and ISIS-held town on the outskirts of Sirte. ISIS claims to have taken 166 Brigade camps south and east of Sirte, and posted photos of what it says is seized equipment.

Maya indigenous peasants in Mexico's southern state of Chiapas are marching cross-country to oppose violence by the local narco gangs and the corruption of local authorities that protect them. The "pilgrimage" left the rural town of Simojovel some 15,000 strong at the end of March, and is now arriving at the state capital Tuxtla Gutiérrez, some 240 kilometers away through rugged country. The pilgrimage was organized by the Catholic pacifist group Pueblo Creyente (Faithful People) with the support of the local diocese of San Cristóbal de Las Casas in response to a wave of narco-violence in Simojovel.

The Iraqi city of Ramadi fell to ISIS over the weekend, sending 25,000 residents fleeing. Government forces defending the city reportedly abandoned their positions after days of intense fighting. Prime Minister Haider al-Abadi has called up Shi'ite militias to re-take the city. A broad front of Shi'ite militias is operating under the umbrella of the Popular Mobilization Units or Hashed al-Shaabi. the Anbar Provincial Council said Sunni tribal militias would also join the offensive to retake the city. (BBC News, Reuters, IraqNews, BasNews)

Grupo Mexico's Southern Copper Corp on May 15 announced a 60-day halt in its huge Tia Maria project in southern Peru's Arequipa region following seven weeks of escalating protests in which three people have been killed and more than 200 injured. Company president Oscar Gonzalez said in a statement that the "pause" would let all sides air concerns and "identify solutions." Protesters in Cocachacra, the center of the conflict in Islay province, say they have no intention of backing down from their demand that the $1.4 billion project be canceled. Peru's President Ollanta Humala said canceling the project would expose the country to lawsuits and make it less attractive to investors.

Mali's government is boasting a deal with Tuareg leaders signed May 15 in the capital Bamako that grants autonomous powers to the northern homeland of Azawad. But the "Algiers Accord"—named for Algeria-brokered negotiations—was not signed by the main rebel factions. Two leaders of the Coordination of Azawad Movements (CMA) signed, but not the body as a whole. The pro-Bamako militia known as the Tuareg Self-Defense Group of Imghad and Allies (GATIA) also signed. But the National Movement for the Liberation of Azawad (MNLA) and allied High Council for the Unity of Azawad boycotted the ceremony. Also absent were the Arab Movement of Azawad (MAA),  Coordination for the People of Azawad (CPA), and Coordination of Movements and Fronts of Patriotic Resistance (CM-SAF).

The Syrian Observatory for Human Rights reports that ISIS forces are advancing on the ruins of the ancient city of Palmyra, a UN World Heritage Site, where it is feared they will carry on their campaign against the archaeological treasures of the Fertile Crescent. ISIS militants have already seized parts of  adjacent city of Tadmur. Palmyra and Tadmur are situated in a strategic area on the road betwee Damascus and the contested eastern city of Deir al-Zour, and close to gas fields (BBC News) ISIS militants have executed 26 civilians in villages they seized near Palmyra, according to the Syrian Observatory. "Daesh executed 26 civilians, including at least 10 by beheading, after accusing them of collaborating with the Syrian regime," said the Observatory. (AFP)