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Russian attacks have left thousands without power in Ukraine, while a drone attack killed two people in Russia, as United States-led peace talks on ending the war, deep in its fourth year, press on. Ukrainian President Volodymyr Zelenskyy said Saturday that Russian night-time attacks damaged more than a dozen civilian facilities, disrupting power in seven regions. "They still aim to destroy our state and inflict maximum pain on our people." Kyiv and its Western allies have repeatedly said Russia is trying to cripple the Ukrainian power grid and deny civilians access to heat, light and running water for a fourth consecutive winter, in what Ukrainian officials call "weaponising" the cold. Russian attacks left parts of the Kherson region, including the regional capital, Kherson, without power, according to regional head Oleksandr Prokudin.

What is in the 28-point US plan for Ukraine? 'Ukraine is running out of men, money and time' Can the US get all sides to end the war? Why is Europe opposing Trump's peace plan? Russian tanker struck off Turkiye as Ukraine targets'shadow fleet' A Russian-flagged tanker in the Black Sea has reported being attacked off the Turkish coast, the third such vessel to have been targeted within a week. The Turkish Directorate General of Maritime Affairs said on Tuesday that the Midvolga-2 had reported coming under attack about 130km (80 miles) from land.

Can Ukraine restore its pre-war borders? Why are Tomahawk missiles for Ukraine a'red line' for Russia? Is Russia testing NATO with aerial incursions in Europe? Russian President Vladimir Putin said his forces have captured almost 5,000 square kilometres (1,930sq miles) of Ukrainian territory so far this year, and Moscow retains the strategic initiative on the battlefield. Russian troops have captured the Ukrainian villages of Novovasylivka in the southeastern Zaporizhia region and Fedorivka in the eastern Donetsk region, Russia's defence ministry said.

Israel and Iran have carried out a new wave of attacks on key cities, fuelling fears of an all-out sustained war, with heavy exchanges now entering a third day. Iranian missiles struck northern Israel, killing at least three people and wounding 13 others, late Saturday into Sunday, according to Israeli media. Israel targeted the Iranian defence ministry headquarters in Tehran early Sunday, according to the semi-official Tasnim news agency. Iranian officials also said the Shahran oil depot, northwest of Tehran, was struck by Israel. Tasnim News said operational and rescue forces arrived at the scene and are still working to extinguish the fire.

The outlawed Kurdistan Workers' Party (PKK) has claimed responsibility for an attack on a Turkish state-run defence company near the capital, Ankara, that killed five people and wounded 22. The "act of sacrifice" in Ankara "was carried out by a team of the immortals battalion" of the PKK, the group said on the Telegram messaging app on Friday. Turkish Aerospace Industries (TUSAS) was attacked on Wednesday with fighters setting off explosives and opening fire using automatic rifles at the campus of the company that designs and manufactures civilian and military aircraft, unmanned aerial vehicles (UAVs) and other defence industry and space systems. On Friday, Turkey's Ministry of National Defence said it carried out air strikes for the second night in a row in northern Iraq, hitting 34 PKK targets in Hakurk, Gara, Qandil and Sinjar, destroying shelters, warehouses and other facilities. The overnight strikes followed a security meeting that Turkish President Recep Tayyip Erdogan chaired with key ministers and chiefs of the armed forces and intelligence agency in Istanbul. The Turkish government said earlier it had proof that the PKK, listed as a terror group by Turkey, the United States and the European Union, was behind the attack.

Istanbul, Turkey – As nationwide local elections approach on March 31, there are concerns in Turkey about the growing threat of disinformation and fake media created through artificial intelligence. Earlier this year, a video spread across social media purportedly showing Istanbul's opposition mayor praising President Recep Tayyip Erdogan's ruling Justice and Development Party (AK Party). Ekrem Imamoglu, of the Republican People's Party (CHP), is seen in the video commending the "great steps" taken in public transport projects when the AK Party controlled Istanbul. While the video was widely discredited due to the substance of Imamoglu's "comments", it raised fears about media manipulation in an election where the AK Party is trying to retake cities won by the opposition in 2019. Political scandals over "leaked" recordings are nothing new in Turkey.

A Turkish opposition legislator who suffered a heart attack and collapsed in parliament during a speech railing against the government's policy towards Israel has died. Health Minister Fahrettin Koca said on Thursday that Hasan Bitmez, a 54-year-old member of the Islamist Saadet Partisi, or Felicity Party, had died in an Ankara hospital two days after the incident. "You allow ships to go to Israel, and you shamelessly call it trade. "Even if you escape the torment of history, you will not be able to escape the wrath of God," he said at the end of the 20-minute speech before collapsing at the lectern. Other members of the Grand National Assembly rushed forward to help, and Koca said on Tuesday that Bitmez had been "resuscitated in parliament and transferred within 20 minutes to hospital" where medical equipment had kept him alive.

The backpropagation algorithm has experienced remarkable success in training large-scale artificial neural networks; however, its biological plausibility has been strongly criticized, and it remains an open question whether the brain employs supervised learning mechanisms akin to it. Here, we propose correlative information maximization between layer activations as an alternative normative approach to describe the signal propagation in biological neural networks in both forward and backward directions. This new framework addresses many concerns about the biological-plausibility of conventional artificial neural networks and the backpropagation algorithm. The coordinate descent-based optimization of the corresponding objective, combined with the mean square error loss function for fitting labeled supervision data, gives rise to a neural network structure that emulates a more biologically realistic network of multi-compartment pyramidal neurons with dendritic processing and lateral inhibitory neurons. Furthermore, our approach provides a natural resolution to the weight symmetry problem between forward and backward signal propagation paths, a significant critique against the plausibility of the conventional backpropagation algorithm. This is achieved by leveraging two alternative, yet equivalent forms of the correlative mutual information objective. These alternatives intrinsically lead to forward and backward prediction networks without weight symmetry issues, providing a compelling solution to this long-standing challenge.

Fox News Flash top headlines are here. Check out what's clicking on Foxnews.com. Russian drones on Wednesday hit a Ukrainian port city along the border with Romania, causing significant damage and a huge fire at facilities that are key to Ukrainian grain exports. The attacks followed the end of a deal with Russia that had allowed Ukrainian shipments to world markets from the Black Sea port of Odesa. Since scrapping the deal, Russia has hammered the country's ports with strikes, compounding the blow to the key industry.