Defence secretary says Britain must manufacture at scale as Germany’s Rheinmetall opens Midlands factory

For the last 20 years, Britain was unable to put a barrel on its tanks without buying from abroad. Relying on foreign allies seemed like a reasonable choice during years of relative security (for wealthy countries at least) after the end of the cold war.

But Russia’s full-scale invasion of Ukraine in 2022 has changed the calculation – and prompted a scramble to rearm among European countries, including the UK.

The Pentagon’s Active Denial System shoots energy beam that causes ‘sensation of intense heat on surface of skin’

Pete Hegseth, the US secretary of defense, reportedly signed a memo last month permitting the Department of Homeland Security (DHS) to test a non-lethal “heat ray” for potential use at the US southern border.

The “heat ray”, known as the Active Denial System, is a military-grade weapon that shoots an energy beam causing “a sensation of intense heat on the surface of the skin”, according to a 2009 National Defense University case study on the weapon.

In his annual speech on threats to the nation, Sir Ken McCallum, the head of the UK’s intelligence service, MI5, warned that AI had the potential to ‘change the stakes’ on existing and even new bioweapons. To find out why, and how, Ian Sample speaks to Dr Tom Inglesby, director of the Johns Hopkins Center for Health Security and the Bloomberg School of Public Health. He explains what has governments so worried and what measures could be put in place to reduce the risks

Could AI ‘change the stakes’ in the development of bioweapons?

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Throttling of mobile internet system will affect Kyiv’s air defences more than its strikes on oil refineries. Now Zelenskyy must be hoping that US intel holds

In Ukraine the situation was already jittery enough. Donald Trump has been inventing ceasefires and buying Russian diesel to shore up his flagging popularity, while a sinister new wave of faster, jet-powered drones are breaking through Kyiv’s stretched air defences. Casualties are rising as the weather turns.

Overnight, Russia bombed three power plants that supply Kyiv, aiming to cut off heating and electricity to the city. According to the president, Volodymyr Zelenskyy, for a second night in a row no warning came from Ukraine’s western allies of the incoming ballistic missiles – and so no air raid alert was issued.

Faced with deadlier threats, demining groups are coming up with new ways of working using drones and AI

Crouched over on her hands and knees in a field of weeds, Olena Kabanova is digging into the ground. With a shovel and a steady hand, the 58-year-old digs out a neat square around the spot where a mine detector has sensed a suspicious object.

Four years ago, this field in eastern Ukraine was occupied by Russian soldiers. Now back under Ukrainian control, it is littered with landmines. Civilians such as Kabanova are trying to make the land usable again.