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.

Recently mobilised Russian troops said to have been killed; Ukraine reports 20 ‘aerial targets’ shot down above Kyiv

• At a glance: what we know on day 313 of the invasion

A New Year’s Day attack on a complex in the Russian-controlled city of Makiivka killed scores of recently mobilised troops sent by Moscow, according to reports on both sides, in what could be one of the deadliest known incidents involving Russian conscripts so far.

Without claiming the strike, Ukraine’s military command said up to 400 Russian soldiers were killed in the incident in Makiivka, a city in the Moscow-controlled parts of the Donetsk region.