Zelenskiy warns of Russian drone campaign as Ukraine claims to have downed almost 500 since September – as it happened

Protracted campaign of Iranian drones to exhaust' Ukraine, says president. This live blog is now closed

• At a glance: what we know on day 314 of the invasion

Nato countries will discuss their defence spending targets in the coming months as some of them call for turning a 2% target into a minimum figure, Nato secretary general Jens Stoltenberg told the German news agency DPA, according to a Reuters report.

Some allies are strongly in favour of turning the current 2% target into a minimum," DPA quoted Stoltenberg as saying in an interview published on Tuesday.

We will meet, we will have ministerial meetings, we will have talks in capitals," he said.

The parties discussed expected results of the next Ukraine-EU summit to be held on 3 February in Kyiv and agreed to intensify preparatory work," the statement read.