After months of ratcheting up pressure on Ukraine to do a peace deal, Donald Trump’s now supplying arms to them, and sending the bill to the rest of NATO.

But can weapons worth billions turn the tide, maybe change President Putin’s calculus, or will they just drag out a slow-motion defeat? The military options are explained by former defence attaché John Foreman and Professor Michael Clarke.

What’s motivated scores of British veterans to fight in Ukraine, and how does it compare to their time in British uniform? Colin Freeman tells us about his new book “The Mad and The Brave – The Untold Story of Ukraine’s Foreign Legion”

And how starlings are teaching scientists to make drones much more lethal, in the first of Sitrep’s new series explaining transformative military technologies.