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Australia’s richest person questions cost and time spent investigating former soldiers as pockets of support emerge for Victoria Cross recipientFollow our Australia news live blog for latest updatesGet our breaking news email, free app or daily news podcastAustralia’s richest person, Gina Rinehart, says “I don’t understand” the justification for prosecuting Ben Roberts-Smith for alleged war crimes, as pockets of high-profile support emerge for the Victoria Cross recipient.Roberts-Smith was arrested in Sydney on Tuesday and charged with five counts of “war crime – murder” in relation to alleged offences in Afghanistan between April 2009 and October 2012. He is yet to enter a plea but is expected to defend the charges. Continue reading...

Billionaire claims world’s biggest music company has suffered due to postponement of US listingBusiness live – latest updatesBillionaire Bill Ackman’s hedge fund has offered to buy Universal Music Group (UMG) in a deal that values the world’s biggest music company at more than €50bn (£44bn).Pershing Square, the New-York based hedge fund, has offered to buy the business, which is home to artists including Taylor Swift and Elton John, in a cash and stock deal. Continue reading...

• Microsoft revealed a $10 billion investment plan in Japan focused on AI infrastructure, cybersecurity cooperation, and developer training. • The initiative partners with Sakura Internet and SoftBank to train one million engineers and developers by 2030, boosting local AI capabilities. • Sakura Internet's stock surged sharply following the announcement, signaling market optimism for Japan's tech infrastructure growth amid US tech ripple effects.

• AI's growing appetite for compute power is forecasted to hit $100 billion, creating new industrial layers like AI factories and energy-to-intelligence conversion. • This shift is rewriting rules for tech supply chains, with Nvidia at the forefront of the transformation. • The development signals a pivotal moment for US AI infrastructure investment and energy demands.

• Family caregivers in Florida deliver an estimated $81 billion worth of unpaid care each year, according to a new AARP survey. • This substantial economic contribution underscores the vital role informal caregivers play in the state's health system. • Policymakers may consider support measures to address caregiver burden and sustain this workforce.

• OpenAI reached an $852 billion valuation and launched the ChatGPT super app on April 4, 2026, integrating chat, coding, search, and AI agents into a unified platform. • The app serves 900 million weekly users, positioning it as a comprehensive AI workspace for enterprise and personal use. • This launch intensifies competition in multimodal AI tools amid surging demand for integrated platforms.

Companies using heating oil have already begun rationing their fuel use, says Federation of Small BusinessesMiddle East crisis – live updatesThousands of independent businesses across the UK are braced for their energy bills to more than double owing to the sharp rise in heating oil costs as the war in Iran pushed Europe’s fuel market prices to fresh record highs.About 7% of all small and medium-sized companies warm their properties and provide hot water using heating oil, which in some cases has more than doubled in recent weeks. Continue reading...

• Shield AI, a U.S.-based developer of autonomous pilot platforms, secured $1.5 billion in Series G funding as part of a $2.25 billion capital package on April 4, 2026. • The round values the company at $12.7 billion, a 140% increase in one year, with its Hivemind platform selected by the U.S. military for defense applications. • This funding underscores surging investor confidence in AI-driven defense tech amid rising geopolitical tensions.

• Meta Platforms acquired Manus, a Singapore-based AI startup, in a deal valued at over $2 billion to advance AI infrastructure. • The acquisition bolsters Meta's capabilities in AI development amid US tech competition. • Details on Manus technology integration remain pending announcement.

• Billie Eilish and brother Finneas O'Connell won Song of the Year at the 2026 Grammy Awards held April 5 in Las Vegas for 'Ocean Eyes Reprise'. • Award marks their fifth Song win, beating nominees like Taylor Swift and Kendrick Lamar; Eilish said, 'This one's for the dreamers who never quit.' • Event viewed by 18.7 million, up 12% from 2025, highlighting music awards' TV resurgence.