Drones have come of age in Ukraine, ruling the battlefield and overtaking artillery as the leading cause of casualties.

Kate and Mike are joined by RAF veteran Dr Keith Dear to explain how small devices once designed for consumers are now not only flying spies, but also lethal weapons that have radically changed the way land battles are fought.

Ukrainian drone-experts are reported to be training British troops as part of Operation Interflex.  So what can we learn from their experiences, and can we be sure that drones will still be as relevant in the next war?

And the founder of SYOS aerospace, which will supply £30m worth of drones to Ukraine, explains how drone-boat technology is evolving and has helped Ukraine neutralise Russia’s black sea fleet.

The death and destruction in Ukraine has only intensified in the two months since Donald Trump unilaterally announced peace talks, and the one month since Ukraine offered a 30-day ceasefire.

With diplomacy having delivered nothing so far Sitrep explains how the war has played out in that time, who has the battlefield momentum, and the potential paths ahead.

Equipment is key to Ukraine’s chances but a leaked German assessment says high-end tanks, like the Leopard 2, sometimes cause problems rather than providing capability.

Former British tank-commander Hamish de Bretton-Gordon explains why, what lessons the UK should take from this, and which tank he’d want to be in if he were in Ukraine.

The Royal Navy’s newest aircraft carrier will be accompanied by more than 3000 servicemen and women, up to 24 RAF fighter jets, four British ships and four more from allies to sail as a carrier strike group halfway round the world.

But it is a considerably more dangerous world than four years ago when a British carrier group last sailed to the Indo-Pacific.

Retired Commodore Steve Prest tells us what threats the vessels could face in the Red Sea and the capabilities they have to protect themselves, and Professor Michael Clarke explains why the UK wants to show off its military might as far away as Australia when a land war is raging in Europe.

This first global operational deployment for HMS Prince of Wales will also be the first time a UK carrier has sailed with a full complement of British F35’s, and Claire Sadler explains another first – using drones to fly resupply missions between ships.

The world’s biggest military powers are all jockeying for position in and around the Arctic, starkly illustrated by Donald Trump’s demands for the US to buy Greenland even though it’s  already NATO territory.

Sitrep explains the melting pot of strategic positioning, potential trade routes, and natural resources that are driving shows of military force, including by the UK, in the High North.

Arctic expert Professor Caroline Kennedy-Pipe tells us the US can already put as many military bases as it wants in Greenland, but that the race for minerals also really matters for military power. And Professor Michael Clarke reveals the weapon of choice for Canadian troops in the Arctic, to defend themselves from polar bears.

The head of NATO says nothing can replace the US nuclear umbrella as the ultimate guarantee of our security,  and “Europe needs to know Uncle Sam still has our back”

But amid doubts about US commitment there is talk creating a comprehensive European nuclear capability without American-owned weapons.  Could the UK and France really provide a Europe only deterrent?  And if so, should they?

Sitrep compares our capabilities with the rest of the world and explains the complex thinking behind history’s bluntest and most powerful weapons.

Former NATO arms-control director William Alberque tells us why his thinking today is different, and Professor Michael Clarke explains why he has, very reluctantly, changed his view on Britain’s nuclear deterrent.

The head of the Army has spoken of his “anger and shame” after more than a thousand women shared stories of harassment, bullying and much worse while they served their country.

Another set of changes have been announced to try to stop unacceptable behaviours, including a tri-service unit to take over the most serious complaints from the chain of command. But is it enough?

Sitrep explains the detail of the changes and talks to two veterans, who are also leading advocates for women in the forces.

Former Conservative MP Sarah Atherton and Commodore Steve Prest share their own experiences to assess the scale and causes of unacceptable behaviours, and how culture can be changed to prevent bullying, harassment and discrimination.

Sitrep assesses how the 30-day ceasefire, offered by Ukraine, could work in reality.  Would troops just stay in place and dig in, or might they have to pull back from a buffer zone?

It is a tactical trade-off by Kyiv which gives it back US military aid and intelligence, and forces Russia onto the diplomatic back foot.

Professor Michael Clarke explains which side has most to gain from a pause to rest and re-equip while former head of the Army, General Lord Dannatt, shares lessons from Bosnia suggesting even the most junior soldiers will have to fully understand the terms of any deal.

Kate and Mike also talk to former UK National Security Adviser Lord Peter Ricketts to assess the UK’s role in getting to this point, and the possibility of British troops being part of any longer-term peace plan.

The highest command in the world’s most powerful military alliance has always been held by a top American officer, almost always with a British deputy.

But as the Trump administration tells Europe the US will do less, and we’ve got to do much more for our own defence, should the Supreme Allied Commander Europe (SACEUR) become a European job?

Kate Gerbeau talks to General Philip Breedlove, who was SACEUR from 2013-2016, about what the role involves, how much influence it wields, and how much difference the change could make.

He also reveals how during Russia’s first invasion of Ukraine (2014) he used his other role, as a US commander, to deliver action that had been resisted from within the alliance. 

Whatever you think of how President Trump said it to President Zelensky, the fact is Ukraine is not in good position. 

That was made worse by the freezing of US military aid, and crucial moment-by-moment intelligence.

Sitrep explains how that has left Ukraine “blindfolded with one hand tied behind its back”  and assesses its options to stay in the fight or even strengthen its position for any talks.

Former UK military attaché to Ukraine John Foreman tells us the country’s ground capability still remains a key point of leverage, and Sitrep’s Simon Newton details how and when the sudden stop to US hardware flows will bite.

We now have a deadline for the UK to spend 2.5% of national income on defence and it’s much sooner than anyone expected.  But cash doesn’t just turn into military might.

There are many things you could spend it on. People? Hardware? Training? The real question is what you should spend it on, for the right capabilities at the right times.

There are urgent priorities to rapidly improve defence of our own doorstep as the US pulls back, but we still need to plan for long term battle-winning edge.

Professor Michael Clarke explains why ‘invisible’ capabilities will be favoured over heavy metal, while Matthew Savill from RUSI assesses how hard it will be to deliver the Defence Secretary’s priority of “arresting the long-term fall in numbers of service personnel”.