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How ISWAP and Boko Haram are reshaping the Lake Chad Basin

Al Jazeera

The killing of Abu-Bilal al-Minuki, the second-in-command of ISIL (ISIS), by United States and Nigerian forces marks a notable achievement for "counterterrorism". Yet for analysts observing the Lake Chad Basin, it highlights how persistent and complex insecurity in the region has become. Al-Minuki, a Nigerian national from Borno State, was operating out of a compound near Lake Chad, at the centre of one of the world's most active armed group theatres. Perhaps equally significant is the parallel resurgence of Boko Haram, which quietly rebuilt itself while security agencies primarily focused on the more dominant ISWAP. "While regional forces focused on countering ISWAP's threats, partly due to the group's advanced drone capabilities, Boko Haram appears to have taken advantage of the relative attention on its rival to regroup," Nimi Princewill, a security expert in the Sahel, told Al Jazeera.


Drone attack from Sudan kills 17 people in Chad as war spills over border

Al Jazeera

A drone attack launched from Sudan has killed 17 people in Chad, according to the Chadian government, which has pledged to retaliate against any further strikes as the civil war in the neighbouring nation rages on. A spokesman for the Chadian government announced the death toll on Thursday from the attack on the border town of Tine, which had been targeted despite "various firm warnings addressed to the different belligerents in the Sudan conflict and the closure of the border". Local government sources said it was not immediately clear who was behind the attack, according to Reuters. Chadian President Mahamat Idriss Deby called a meeting of the defence and security council on Wednesday night, ordering the army to "retaliate starting from tonight to any attack coming from Sudan", according to a presidency statement. Early on Thursday, the government said Chad had strengthened its security presence at the border and could potentially carry out operations on Sudanese territory.


Drone attack on market in Sudan kills 11, as air war civilian toll mounts

Al Jazeera

A drone attack on a busy market in western Sudan has killed 11 people and wounded dozens more, including children, as the United Nations warns that the country's rapidly escalating air wars have claimed more than 200 civilian lives in little over a week. The attack on Adikong market, near Sudan's border with Chad, ignited fuel reserves and sent flames tearing through the area on Thursday. MSF described it as the second deadly drone attack on the same area in less than a month. Drones have become a key weapon used by both sides in the war between the Sudanese Armed Forces (SAF) and the paramilitary Rapid Support Forces that began in April 2023. UN Human Rights Chief Volker Turk said on Thursday he was appalled by the scale of intensifying aerial assaults on civilians in the war, warning that more than 200 people had been killed by drones across the Kordofan region and White Nile state since March 4 alone.




Learning Superconductivity from Ordered and Disordered Material Structures Pin Chen

Neural Information Processing Systems

However, some critical aspects of it, such as the relationship between superconductivity and materials' chemical/structural features, still need to be understood. Recent successes of data-driven approaches in material science strongly inspire researchers to study this relationship with them, but a corresponding dataset is still lacking.



UnderstandingHyperdimensionalComputingfor ParallelSingle-PassLearning

Neural Information Processing Systems

Weextend our analysis to the more general class of vector symbolic architectures (VSA), which compute withhigh-dimensional vectors(hypervectors) thatarenotnecessarily binary.


A Statistical Framework for Spatial Boundary Estimation and Change Detection: Application to the Sahel Sahara Climate Transition

arXiv.org Machine Learning

Spatial boundaries, such as ecological transitions or climatic regime interfaces, capture steep environmental gradients, and shifts in their structure can signal emerging environmental changes. Quantifying uncertainty in spatial boundary locations and formally testing for temporal shifts remains challenging, especially when boundaries are derived from noisy, gridded environmental data. We present a unified framework that combines heteroskedastic Gaussian process (GP) regression with a scaled Maximum Absolute Difference (MAD) Global Envelope Test (GET) to estimate spatial boundary curves and assess whether they evolve over time. The heteroskedastic GP provides a flexible probabilistic reconstruction of boundary lines, capturing spatially varying mean structure and location specific variability, while the test offers a rigorous hypothesis testing tool for detecting departures from expected boundary behaviors. Simulation studies show that the proposed method achieves the correct size under the null and high power for detecting local boundary shifts. Applying our framework to the Sahel Sahara transition zone, using annual Koppen Trewartha climate classifications from 1960 to 1989, we find no statistically significant decade scale changes in the arid and semi arid or semi arid and non arid interfaces. However, the method successfully identifies localized boundary shifts during the extreme drought years of 1983 and 1984, consistent with climate studies documenting regional anomalies in these interfaces during that period.


Drone strikes on Sudan kindergarten, hospital kill dozens, local official says

The Japan Times

Sudanese refugee children watch the sunset in the Tine transit camp amid the conflict between the paramilitary Rapid Support Forces (RSF) and the Sudanese Army, in eastern Chad on Nov. 23. Port Sudan, Sudan - A recent paramilitary drone attack on the army-held town of Kalogi in Sudan's South Kordofan state hit a kindergarten and a hospital, killing dozens of civilians including children, a local official said Sunday. The attack, which took place on Thursday, involved three strikes, first a kindergarten, then a hospital and a third time as people tried to rescue the children, Essam al-Din al-Sayed, head of the Kalogi administrative unit, said using a Starlink satellite internet connection. He blamed the assault on the Rapid Support Forces and their ally, the Sudan People's Liberation Movement-North faction (SPLM-N) led by Abdelaziz al-Hilu, which controls much of South Kordofan and parts of Blue Nile state. In a time of both misinformation and too much information, quality journalism is more crucial than ever.