As drones have risen to prominence on the battlefield, so too has electronic warfare, in which adversaries attempt to mask, jam or trace radio signals.

How is Russia replenishing its military? What is a'coalition of the willing'? How China forgot promises and'debts' to Ukraine How are Europe, the US pulling apart on Ukraine? Despite Russian drone strikes, Kharkiv's factories stand firm for Ukraine's security Russian forces killed two people in Ukraine's Kherson, including a 49-year-old woman who was found dead in the rubble of her home, authorities said, a day after Russian attacks killed six people across the country. Ukrainian President Volodymyr Zelenskyy said that Ukrainian soldiers were advancing in the border areas of the northern Sumy region, and said Russian forces had suffered significant losses in the Donetsk and Kharkiv regions along the 1,000km (620-mile) front line.

Mathematical reasoning is critical for tasks such as precise distance and area computations, trajectory estimations, and spatial analysis in unmanned aerial vehicle (UAV) based remote sensing, yet current vision-language models (VLMs) have not been adequately tested in this domain. To address this gap, we introduce AVI-Math, the first benchmark to rigorously evaluate multimodal mathematical reasoning in aerial vehicle imagery, moving beyond simple counting tasks to include domain-specific knowledge in areas such as geometry, logic, and algebra. The dataset comprises 3,773 high-quality vehicle-related questions captured from UAV views, covering 6 mathematical subjects and 20 topics. The data, collected at varying altitudes and from multiple UAV angles, reflects real-world UAV scenarios, ensuring the diversity and complexity of the constructed mathematical problems. In this paper, we benchmark 14 prominent VLMs through a comprehensive evaluation and demonstrate that, despite their success on previous multimodal benchmarks, these models struggle with the reasoning tasks in AVI-Math. Our detailed analysis highlights significant limitations in the mathematical reasoning capabilities of current VLMs and suggests avenues for future research. Furthermore, we explore the use of Chain-of-Thought prompting and fine-tuning techniques, which show promise in addressing the reasoning challenges in AVI-Math. Our findings not only expose the limitations of VLMs in mathematical reasoning but also offer valuable insights for advancing UAV-based trustworthy VLMs in real-world applications. The code, and datasets will be released at https://github.com/VisionXLab/avi-math

We introduce a multi-modal WAVE-DETR drone detector combining visible RGB and acoustic signals for robust real-life UAV object detection. Our approach fuses visual and acoustic features in a unified object detector model relying on the Deformable DETR and Wav2Vec2 architectures, achieving strong performance under challenging environmental conditions. Our work leverage the existing Drone-vs-Bird dataset and the newly generated ARDrone dataset containing more than 7,500 synchronized images and audio segments. We show how the acoustic information is used to improve the performance of the Deformable DETR object detector on the real ARDrone dataset. We developed, trained and tested four different fusion configurations based on a gated mechanism, linear layer, MLP and cross attention. The Wav2Vec2 acoustic embeddings are fused with the multi resolution feature mappings of the Deformable DETR and enhance the object detection performance over all drones dimensions. The best performer is the gated fusion approach, which improves the mAP of the Deformable DETR object detector on our in-distribution and out-of-distribution ARDrone datasets by 11.1% to 15.3% for small drones across all IoU thresholds between 0.5 and 0.9. The mAP scores for medium and large drones are also enhanced, with overall gains across all drone sizes ranging from 3.27% to 5.84%.

How is Russia replenishing its military? What is a'coalition of the willing'? How China forgot promises and'debts' to Ukraine How are Europe, the US pulling apart on Ukraine? Russia and Ukraine have been engaging in major aerial battles, targeting energy and transportation infrastructure, as Moscow presses its fierce ground assault in the Ukrainian east in the war's fourth year and tests a type of hypersonic weapon. Russia's Ministry of Defence announced on Sunday that its air defences shot down 361 drones, four guided aerial bombs, and rockets from a US-made high mobility artillery rocket system (HIMARS) overnight.

Romania says a Russian drone has breached its airspace - the second Nato country to report such an incursion. Romanian fighter jets were in the air monitoring a Russian attack in Ukraine on Saturday and were able to track the drone near Ukraine's southern border, the defence ministry said in a statement. Ukrainian President Volodymyr Zelensky said the incursion could not be a mistake - it was an obvious expansion of the war by Russia. Moscow has not commented on the Romanian claims. On Wednesday, Poland said it had shot down at least three Russian drones which had entered its airspace.

Strikes on Qatar, Poland shake U.S. sway among friend and foe U.S. President Donald Trump speaks at the Museum of the Bible in Washington on Sept. 8. Israeli strikes in Qatar and Russian drone incursions into Poland have challenged the U.S. leaders claims of global respect. The shock Israeli strike against Hamas officials in Doha, followed by Russian drones piercing the airspace of NATO ally Poland, delivered twin blows to President Donald Trump's longtime boast that friends and foes respect the U.S. under his leadership like never before. Trump voiced unhappiness with Israeli Prime Minister Benjamin Netanyahu for sending warplanes to attack the capital of Qatar, a major U.S. ally, but has otherwise resisted getting more involved. He has declined to denounce Russia's drone incursion into Poland, saying Thursday it could have been a mistake but regardless I'm not happy about anything having to do with that whole situation." Trump's removed attitude contrasts sharply with his repeated claims about his unique ability to solve the world's intractable conflicts. While he has conceded that Russia's war in Ukraine -- which he once pledged to resolve on his first day back in office -- has been more difficult than anticipated, he recently said President Vladimir Putin wants to make a deal for me."

How is Russia replenishing its military? What is a'coalition of the willing'? How China forgot promises and'debts' to Ukraine How are Europe, the US pulling apart on Ukraine? Romania has scrambled fighter jets after a drone breached the country's airspace during a Russian attack on neighbouring Ukraine, its Ministry of National Defence said, as Kyiv accused Moscow of expanding its war. The Romanian move on Saturday came as Poland also deployed aircraft and closed an airport in the eastern city of Lublin over the threat of a drone attack.

How is Russia replenishing its military? What is a'coalition of the willing'? How China forgot promises and'debts' to Ukraine How are Europe, the US pulling apart on Ukraine? NATO fighter jets headed to eastern Europe under new'Eastern Sentry' Russian attacks on Ukraine killed at least three people in the Donetsk region and another in Kharkiv, the Kyiv Independent reported on Saturday, citing local officials. A drone breached Romanian airspace during a Russian attack on Ukrainian infrastructure, prompting Romania to scramble fighter jets, the country's defence minister, Ionut Mosteanu, said.

BUCHAREST - Romania scrambled fighter jets on Saturday when a drone breached the country's airspace during a Russian attack on Ukrainian infrastructure near the border, the defense ministry said. Defense Minister Ionut Mosteanu said the F-16 pilots came close to taking down the drone as it was flying very low before it left national airspace toward Ukraine. A threat of drone strikes also prompted Poland to deploy aircraft and close an airport in the eastern city of Lublin on Saturday, three days after it shot down Russian drones in its airspace with the backing of aircraft from its NATO allies. Romania, a European Union and NATO state which shares a 650-km (400-mile) border with Ukraine, has had Russian drone fragments fall onto its territory repeatedly since Russia began waging war on its neighbor. On Saturday, it scrambled two F-16 fighter jets and later two Eurofighters -- part of German air policing missions in Romania -- and warned citizens in the southeastern county of Tulcea near the Danube and its Ukrainian border to take cover, the defense ministry said in a statement.