Estonian Foreign Minister Margus Tsahkna has accused Russia of "sabotage" following an August arson attack on a defence company, Milrem Robotics, a claim the Kremlin rejected. "We can conclude with certainty that the arson attack in Tallinn was an act of sabotage ordered by the special services of the Russian Federation," Tsahkna wrote on X on Tuesday. "This act of sabotage is part of Russia's broader campaign across Europe, aimed at intimidating us and weakening our support for Ukraine," he wrote. Kremlin spokesman Dmitry Peskov rejected the allegation. "Such statements are baseless, ill-considered, have absolutely no relation to reality, and lack any form of reasoning. Consequently, we cannot and will not take such statements seriously," he told reporters.

A fire at a Starlink satellite station in central Poland was a deliberate act of sabotage, a government minister has said. Polish Deputy Prime Minister Krzysztof Gawkowski said the fire in the Masovian Voivodeship province was deliberately designed to disable the station... disrupting internet access for various institutions, including the Ukrainian army. He told Polish public broadcaster TVP Info an investigation was ongoing but many indications suggest the attack fits into a new Russian doctrine of attack. The Kremlin has not commented. Meanwhile, Denmark's intelligence service issued a new threat assessment saying it expects Russia to escalate hybrid warfare in the coming months.

Adversarial optimization algorithms that explicitly search for flaws in agents' policies have been successfully applied to finding robust and diverse policies in multi-agent settings. However, the success of adversarial optimization has been largely limited to zero-sum settings because its naive application in cooperative settings leads to a critical failure mode: agents are irrationally incentivized to selfsabotage, blocking the completion of tasks and halting further learning. To address this, we introduce Rationality-preserving Policy Optimization (RPO), a formalism for adversarial optimization that avoids self-sabotage by ensuring agents remain rational--that is, their policies are optimal with respect to some possible partner policy. To solve RPO, we develop Rational Policy Gradient (RPG), which trains agents to maximize their own reward in a modified version of the original game in which we use opponent shaping techniques to optimize the adversarial objective. RPG enables us to extend a variety of existing adversarial optimization algorithms that, no longer subject to the limitations of self-sabotage, can find adversarial examples, improve robustness and adaptability, and learn diverse policies. We empirically validate that our approach achieves strong performance in several popular cooperative and general-sum environments.

Could Ukraine hold a presidential election right now? Will Europe use frozen Russian assets to fund war? How can Ukraine rebuild China ties? 'Ukraine is running out of men, money and time' The Crimean Tatar movement trying to ruin Russia's army from within On the weekend, a power cut shut down a train line carrying Russian weapons and supplies to the front line through the region of Bryansk in western Russia near the Ukrainian border. But this was no ordinary blackout.

Nine people have been killed and dozens more wounded in a Russian attack on the western city of Ternopil, Ukraine's president Volodymyr Zelensky has said. Nine-storey blocks of flats were hit in the strikes, as Russia fired more than 470 drones and 47 missiles at Ukraine overnight in a brazen attack, Zelensky said. Three districts of Ukraine's second city, Kharkiv, were also hit by a massive drone attack which injured more than 30 people, including children. Photos posted online showed buildings and cars ablaze. Power cuts are affecting a number of regions across the country, Ukraine's energy ministry said.

Prime Minister Donald Tusk calls the Warsaw-Lublin railway explosion an "unprecedented act of sabotage" as Poland accuses Russian intelligence of the attack.

Is the fall of Pokrovsk inevitable? Is Trump losing patience with Putin? A Russian missile strike on the eastern Ukrainian city of Balakliia killed three people and wounded 10, including three children, a regional military official in the Kharkiv region said on Telegram on Monday. At least two people were killed and three were injured in Russian shelling of the Nikopol district in Ukraine's Dnipropetrovsk region, Vladyslav Haivanenko, the acting head of the Dnipropetrovsk Regional Military Administration, wrote on Facebook. Russian troops captured three villages across three Ukrainian regions, the RIA news agency cited the Russian Ministry of Defence as saying on Monday.

Adversarial optimization algorithms that explicitly search for flaws in agents' policies have been successfully applied to finding robust and diverse policies in multi-agent settings. However, the success of adversarial optimization has been largely limited to zero-sum settings because its naive application in cooperative settings leads to a critical failure mode: agents are irrationally incentivized to self-sabotage, blocking the completion of tasks and halting further learning. To address this, we introduce Rationality-preserving Policy Optimization (RPO), a formalism for adversarial optimization that avoids self-sabotage by ensuring agents remain rational--that is, their policies are optimal with respect to some possible partner policy. To solve RPO, we develop Rational Policy Gradient (RPG), which trains agents to maximize their own reward in a modified version of the original game in which we use opponent shaping techniques to optimize the adversarial objective. RPG enables us to extend a variety of existing adversarial optimization algorithms that, no longer subject to the limitations of self-sabotage, can find adversarial examples, improve robustness and adaptability, and learn diverse policies. We empirically validate that our approach achieves strong performance in several popular cooperative and general-sum environments. Our project page can be found at https://rational-policy-gradient.github.io.

Despite rapid growth in multimodal large language models (MLLMs), their reasoning traces remain opaque: it is often unclear which modality drives a prediction, how conflicts are resolved, or when one stream dominates. In this paper, we introduce modality sabotage, a diagnostic failure mode in which a high-confidence unimodal error overrides other evidence and misleads the fused result. To analyze such dynamics, we propose a lightweight, model-agnostic evaluation layer that treats each modality as an agent, producing candidate labels and a brief self-assessment used for auditing. A simple fusion mechanism aggregates these outputs, exposing contributors (modalities supporting correct outcomes) and saboteurs (modalities that mislead). Applying our diagnostic layer in a case study on multimodal emotion recognition benchmarks with foundation models revealed systematic reliability profiles, providing insight into whether failures may arise from dataset artifacts or model limitations. More broadly, our framework offers a diagnostic scaffold for multimodal reasoning, supporting principled auditing of fusion dynamics and informing possible interventions.

Fox News contributors Katie Pavlich and Miranda Devine discuss how President Donald Trump could be the one to bring an end to the Russia-Ukraine war on'Hannity.' Rep. Marjorie Taylor Greene, R-Ga., late Thursday took shots at Ukrainian President Volodymyr Zelenskyy, accusing him of trying to sabotage Friday's highly anticipated peace talks between President Donald Trump and Russian President Vladimir Putin by launching drone strikes on Russia. Greene responded to a post on X from the account, "Open Source Intel," which reported that Ukraine had in recent hours launched "one of the largest" drone attacks on Russia. "On the eve of the historic peace talks between President Trump and President Putin, Zelensky does this," the Republican lawmaker wrote. "Zelensky doesn't want peace and obviously is trying to sabotage President Trump's heroic efforts to end the war in Ukraine. Fox News Digital has reached out to the Ukrainian embassy, seeking a response to Greene's post. Rep. Marjorie Taylor Greene, R-Ga., accused Ukrainian President Zelenskyy of trying to sabotage peace talks between President Trump and Russian President Putin by launching drone strikes on Russia. Ukraine launched multiple drone strikes into Russia overnight Thursday, damaging several apartment buildings in the southern city of Rostov-on-Don and injuring more than a dozen civilians, according to acting governor of the region, Yuri Slyusar. Two of those wounded were hospitalized in serious condition, he said. The Ukrainian strikes came after Russian strikes in Ukraine's Sumy region overnight Wednesday, resulting in multiple injuries, including a 7-year-old girl, per officials. Local officials also accused Ukraine of launching a drone strike in Belgorod that injured three people, and another that struck a car in the village of Pristen that killed at least one individual. Ukrainian President Volodymyr Zelenskyy will not attend the summit in Alaska on Friday between President Donald Trump and Russian President Vladimir Putin. Despite the violence, Trump and Putin are scheduled to meet in Anchorage, Alaska, on Friday for a high-stakes summit on the future of the Ukraine war. The meeting will mark Putin's first visit to the U.S. since 2015 and the first U.S.-Russia summit since June 2021. President Donald Trump will meet with Russian President Vladimir Putin in Alaska on Aug. 15, 2025. Putin praised the U.S. on Thursday for making "sincere efforts" to end the war between Russia and Ukraine, which has been raging since early 2022. Appearing on television, the Russian president said the U.S. was "making, in my opinion, quite energetic and sincere efforts to stop hostilities, stop the crisis and reach agreements that are of interest to all parties involved in this conflict." Zelenskyy accused Russia of not being sincere in its intention to wind down the war. "This war must be ended.