Hello and welcome to NewsHour from the BBC World Service.
We're coming to you live from London.
I'm James Menendez.
They say necessity is the mother of invention.
Ukraine doesn't have the same huge arsenal of missiles,
fighters and bombers as its enemy Russia.
But it does, it seems on the evidence today,
have ingenuity, daring and a great deal of patience.
We're told by Ukraine's President Volodymyr Zelensky that Operation Spider's Web was just over a year and a half in the planning.
An elaborate scheme to smuggle more than 100 drones deep into the vast expanse of Russia.
to launch at its fleet of strategic bombers.
And, all the evidence suggests, it worked.
The BBC's Paul Adams is in Kiev.
He's been telling me what was hit and where.
I mean, it's extraordinary, the scope of it.
From one end of Russia to the other, from the Arctic Circle to Siberia,
at least four air bases have been hit,
at least two of them thousands of kilometres away from Ukraine's borders.
and air bases where some of Russia's key strategic bombers are located.
And, I mean, the videos showing these attacks are truly breathtaking.