Hundreds of Ukrainian kamikaze drones have flown towards Moscow in recent weeks. None appear to have even reached the Russian capital, yet the effect on the city — and the wider country — has been hugely significant.

The law to shoot down drones violating Romanian airspace was initially drafted in October following a spate of Russian drones landing in the NATO member. Their target had been southern Ukraine's Odesa Oblast.

Russia said on Wednesday its air defences shot down more than 370 Ukrainian drones, including some approaching Moscow, and the capital's airports were briefly shut down to ensure the safety of flights.