Celia Hatton

Or is this just a flex from Ukraine to show how far Ukrainians can penetrate inside Russia?

Possibly both.

I mean, Lieutenant General Salvarov was a senior figure.

If you're the head of the operational training directorate of the general staff of the Russian Armed Forces, that's a pretty senior role.

I mean, that particular part of the Russian military deals in combat training, readiness for operations and things like that.

So it would be a sign.

I remember a year ago when General Igor Kirillov was killed walking out of his apartment block in Moscow.

A bomb had been hidden in an electric scooter that exploded.

Back then, there were sources in Ukraine that claimed that Kiev was behind that attack.

So I think the Russians strongly suspect there is a Ukrainian link here.

But investigators publicly are saying they're examining different theories, including that the Ukrainian secret services may have been behind this.

Steve Rosenberg in Moscow.

Let's go to the border conflict between Thailand and Cambodia now.

Fighting's been continuing there, even though the two sides signed a peace agreement alongside Donald Trump in October.

And now Thailand's foreign minister has said that pact was rushed through by White House officials so that it could be signed by President Trump when he visited the region.

That admission, just as the two sides say, they're going to meet for a fresh round of talks.

A Southeast Asia correspondent is Jonathan Head.

I asked him how much stock we should put into this next round of negotiations when we've just heard the reported situation around that last deal that was signed.

Well, I think the Thais know that they've got to stop at some point.

I think what's been more surprising is that Thailand has been willing to ignore Donald Trump's pressure completely.