Exclusive: financial disclosures from Emil Michael – who also reaped millions from xAI stock earlier this year – show he sold his Perplexity stock for up to $25m

The top Pentagon official overseeing military artificial intelligence policy, who reaped profits earlier this year of up to $24m selling his private investment in Elon Musk’s AI company, has now sold his holdings in another AI company for between $5m and $25m, according to records seen by the Guardian. (Federal financial records show ranges of dollar values rather than specific figures.)

Earlier this year, the Guardian disclosed that the official, Emil Michael, had profited handsomely from his investment in Musk’s xAI in January, with a gain of between 400% and 4,800%.

Navigating app surpasses Google and Apple Maps on top-downloaded US chart after posting ‘we’re not changing it’

A pioneering online mapping app that defied Donald Trump by refusing to rename Lake Ontario has become the most in-demand navigation tool in the US.

MapQuest, which was openly dismissive of the president’s 27 August executive order directing federal agencies to refer to the smallest of the Great Lakes as “Lake America” amid a trade spat with Canada, leapfrogged rivals Google Maps and Apple Maps to top the most-downloaded list, as first reported by TechCrunch.

Ukraine's Armed Forces are forming the 446th Separate Unmanned Systems Brigade, which is recruiting servicemembers while formation continues, MilitaryLand reported. The new unit joins a force that hit 32,485 Russian personnel over the summer alone, the Unmanned Systems Forces (SBS) reported on 1 September.

Ukraine is facing a shortage of military personnel, yet the Armed Forces are forming their second separate unmanned systems brigade this year. The force's commander wants unmanned systems covering the entire front at tactical, operational, and strategic depths.

What is known about the 446th Brigade

Military personnel from other units can apply for a transfer through Army+, according to MilitaryLand.

The first of the two was the 445th Separate Unmanned Systems Brigade Chata, whose formation became known in July. Both units are recruiting for posts running from operators of ground robots, FPV, bomber, and interceptor drones to psychological-support officers, analysts, and accountants, Militarnyi reported.

The deployment of such units is part of the Ukrainian Armed Forces' broader effort to increase the number of unmanned systems in the military. Ukrainian drones accounted for about 96% of Russian casualties in March—33,988 of roughly 35,000 killed or severely wounded—Zelenskyy said in April.

Why Ukraine is turning to drones

The expansion of unmanned systems brigades is part of a broader effort initiated by Robert Brovdi, callsign Madyar, to increase the role of the SBS within Ukraine's Defense Forces, Militarnyi notes.

Brovdi told Reuters in June that he wants to raise the drone forces from about 2.5% of Ukraine's armed forces to 5%, a goal he first stated publicly in September 2025. At that share, the drone units accounted for roughly a third of Russian losses over the previous 12 months, according to figures the force gave Reuters, which said it could not verify them independently.

Then Commander-in-Chief of the Armed Forces of Ukraine Oleksandr Syrskyi described unmanned systems as one of the key factors shaping modern warfare. Current Commander-in-Chief of the Armed Forces of Ukraine Mykhailo Drapatyi stated that one of his priorities is the development and scaling of the unmanned component.

Overall, the SBS struck 58,465 targets in August, its own tally for 1–31 August shows.

A year on from the purge, with thousands of jobs cut and billions in foreign aid lost, a former leader reflects on the sorry saga – and why it would never happen to Nasa

A year has passed since I and thousands of colleagues lost our jobs at USAID. Asking myself “Why us?” I have come to the conclusion that the American public had very little idea of what we were doing and why.

Doge, the “department of government efficiency”, began its work in January 2025, with USAID as its first target, in a reckless campaign that even Elon Musk has said he would not repeat. At that moment of chaos, Americans lacked the knowledge that could contradict the false narrative presented by Musk, who called the agency a “criminal organisation” and “a viper’s nest of radical left-marxists who hate America”.