We're ending our live coverage of today’s talks between the UK and Ukraine. Here’s a round up of some of the key points:

• Boris Johnson has warned Russia that Britain and its allies will hit Moscow with sanctions the "moment the first Russian toecap crosses further into Ukrainian territory"
• The prime minister says it is vital the Kremlin "steps back" from what would be a "military disaster" for both Russia and the world
• Ukraine’s President Volodymyr Zelensky says he looks forward to the moment Russia pulls back troops from the Ukrainian border
• He confirmed negotiations with Russia are ongoing, adding: “No one can predict what will happen next"
• Meanwhile, Russia’s President Vladimir Putin says Russia’s security concerns have been ignored by the US in his first public comment on the situation in Ukraine since December
• But he says he hopes NATO, the US and Russia will continue talking to find a solution, adding ‘it’s not going to be easy’

The short answer is yes, although it’s largely a frozen conflict.

When Ukrainians deposed their pro-Russian president in early 2014, Russia annexed Ukraine's southern Crimean peninsula and backed separatists who captured large swathes of the eastern Donbas region.

The rebels have fought the Ukrainian military ever since in a conflict that has claimed more than 14,000 lives.

Russia's military intervention in 2014 sparked a major rift with Western nations, prompting the European Union and the US to impose sanctions on Russia.

Image source, Reuters

Image source, PA Media

Let's take a look at some of the main points Volodymyr Zelensky made during his press conference with Boris Johnson.

• Zelensky said preventative sanctions against Russia would work if they are introduced prior to escalation. "Prevention is better than treatment," he said

• He said he looks forward to the moment Russia pulls back troops from the Ukrainian border, adding that Russians don't want to die in a war against Ukraine
• He said Ukraine is treating the Minsk treaty - an agreement which sought to end war in the Donbas region of Ukraine - responsibly. As a result, there has been less firing and less tension, he added
• Negotiations with Russia are ongoing, but he added: “No one can predict what will happen next"

Putin's threat of force gets US attentionpublished at 18:43 Greenwich Mean Time 1 February 2022

18:43 GMT 1 February 2022

Paul Adams
BBC diplomatic correspondent

Russian troops are still in place. The threat to Ukraine remains obvious. But diplomacy is in high gear too and could still avert a conflict.

While Boris Johnson and his Polish counterpart were in Kyiv, Hugary’s Viktor Orban was in Moscow and Vladimir Putin spoke on the phone to the Italian prime minister. Little new emerged on the most important track of all: the dialogue between Russia and the US.

But that channel, involving meetings, calls and letters between the US Secretary of State Antony Blinken and the Russian Foreign Minister Sergei Lavrov, is ranging across the whole spectrum of European security issues, not just the future of Ukraine.

It’s a dialogue which analysts in Russia say hasn’t taken place for more than 30 years. Only Vladimir Putin’s threat of force, they say, has made it possible.

“He has successfully deployed military forces to get attention,” the former US National Security Council official Fiona Hill told Britain’s Parliamentary Foreign Affairs Committee this afternoon.

The outcome of the discussion, which has barely begun, remains uncertain. But while it happens, war seems unlikely.

US-Russia call did not move things forwardpublished at 18:39 Greenwich Mean Time 1 February 2022

18:39 GMT 1 February 2022

Barbara Plett Usher
State Department Correspondent, BBC News

One day after a bitter public exchange between the United States and Russia at the UN Security Council, the top diplomats of both countries held a private discussion that was “professional and candid” earlier.

Although the tone was diplomatic, the call did not appear to move anything forward or backward.

According to senior State Department officials who briefed afterwards, both men restated their positions and agreed to speak again after President Vladimir Putin had signed off on a formal response to American security proposals aimed at de-escalating the Ukraine crisis.

The Russian Foreign Minister Sergei Lavrov repeated that Russia was not escalating and the US Secretary of State Antony Blinken said then now would be a good time to downsize its massive military build-up, the scale of which “we haven’t seen before,” said one official.

The bottom line is that the US still doesn’t know what President Putin plans to do with all his troops. So, while it’s willing to engage diplomatically as long as the Russians are, at the same time it's preparing tough measures to deter a possible invasion.

Olga Ivshina
BBC Russian Service

Russian state TV is flooded with news reports and talk shows discussing tension around Ukraine. They all claim that Russia is only responding to provocation from the West.

"Under the pretext of threat of aggression from Russia, Kyiv is not only asking for weapons but for financial aid as well," says one channel.

A report on another state channel shows Donetsk - the biggest city in the rebel-held territory. Officials of the unrecognised republic claim that they found an improvised explosive device, which they say has been planted by the Ukrainian special services.

And then come statements of Russian diplomats, also accusing the West of provocations.

"It's like you're calling for [an invasion], wanting it and waiting for it to happen. As if you want to make your speculations real,” Russia's official representative to the UN Vasily Nebenzia said on Monday.

These statements are confusing for the Russian audiences, many of whom struggle to understand what is happening and why.

Meanwhile, Kremlin’s main objective is to show that whatever happens next is not Russia’s fault.

Little room for levity as de-escalation proves elusivepublished at 18:30 Greenwich Mean Time 1 February 2022

18:30 GMT 1 February 2022

Caroline Hawley
BBC News

The gravity of the crisis meant that there was little room for levity from Boris Johnson and Volodymyr Zelensky who, in better circumstances, both like to make people laugh.

Zelensky, a former comedian, warned of the dangers of a fully-fledged war in Europe. Johnson said there was still room for dialogue but that a Russian invasion was a “clear and present danger”.

There were warm words from the two men about friendship and partnership.

Zelensky, who has had three Western leaders in town today – the Dutch and Polish prime ministers, as well as Johnson – was grateful for the UK’s support. Johnson called Ukraine a “firm and enduring ally”.

As he heads back to face his own political troubles at home, his next diplomatic move is a phone call with President Putin - tomorrow.

But de-escalation is proving elusive. And as Zelensky said: “No one can predict what will happen next.”

Russian President Vladimir Putin says he hopes dialogue on Ukraine will continue in order to avoid "negative scenarios" including war.

At a news conference earlier, Putin raised the possibility of war between Russia and Nato if Ukraine joined the alliance and then attempted to take back Crimea from Russia by force.

"Let's imagine Ukraine is a Nato member and starts these military operations. Are we supposed to go to war with the Nato bloc? Has anyone given that any thought? Apparently not," he says.

Putin says ways need to be found to protect everyone's security.

A joint statement issued following Boris Johnson's meeting with Ukrainian President Volodymyr Zelensky outlines how the UK stands "shoulder to shoulder with Ukraine in the face of ongoing Russian aggression".

The prime minister told a news conference in Kyiv that the UK and allies are ready to launch sanctions against Russia "the moment the first Russian toe-cap crosses further into Ukrainian territory".

He said: "It is vital that Russia steps back and chooses a path of diplomacy.

"We are keen to engage in dialogue."

Johnson also said the build-up of Russian troops on the Ukrainian border was possibly the greatest act of hostility "towards the Ukraine in our lifetimes".

He said any conflict would come at a high cost.

"The Ukrainian army will fight. They will put a very, very, very fierce and bloody resistance and I think that parents, mothers in Russia, should reflect on that fact," he said.

Boris Johnson and Volodymyr Zelensky have finished taking questions from reporters. We'll take stock and bring you the key things that they said, along with analysis from our correspondents. Stay with us.

Image source, PA Media

Zelensky says he is looking forward to the moment when Russia withdraws its troops from the border.

"We don't need words. Just make that one step," he says.

"I know many Russians don't want to fight and die in a war against Ukraine," he adds.

President Zelenksy is asked whether the UK is doing enough to support Ukraine, in particular by tackling the "dirty money" of Russian oligarchs in London.

He says that if London is "serious about these matters", Ukraine would support this "very much".

On how effective sanctions could be, Zelensky says preventative sanctions would work if they are introduced prior to escalation.

"Let’s introduce them first and then we'll see," he adds.

President Volodymyr Zelensky has been asked about the Minsk treaty - an agreement which sought to end war in the Donbas region of Ukraine.

He says Ukraine is treating the agreement responsibly.

He says as a result, there has been less firing and less tension. He admits casualties and deaths still happen, but says “the degree of this has been reduced”.

Image source, PA Media

Boris Johnson is asked about why his phone call with President Putin - due yesterday - was delayed, with suggestions it was because of political problems at home.

The prime minister says he will be talking to President Putin tomorrow, adding that there is a "clear and very present danger".

He says Putin is “holding a gun" to the head of Ukraine and trying to "undermine the immense gains" of previous decades and "redraw the security map of Europe".

"This moment is absolutely critical - it's vital that we stand together on Ukraine, as we are," says Johnson.

"Our view is that time is urgent and this needs to be addressed now."

Image source, PA Media

"We are adults," Zelensky says, when talking about negotiations.

There are talks going on behind the scenes, he says, adding that it isn't "easy" but "nobody is complaining".

"We will win," he adds.

Johnson says two weeks ago the UK sent anti-tank weaponry to strengthen Ukraine defences on the border.

He adds that the UK and other countries are preparing a package of sanctions and other measures “to be enacted the moment the first Russian toe cap crossed further into Ukrainian territory".

He says it is not being done as a "show of hostility towards Russia, but as a demonstration that we will always stand up for freedom and democracy and Ukrainian sovereignty in the face of aggression".

Image source, PA Media

Boris Johnson has taken a question from the BBC's James Landale

He is asked how the international community can take him seriously when he is so preoccupied with problems at home.

Johnson says his "focus is on delivering on priorities of the British people" and bringing "friends and partners together".

He says sanctions on Russia will be applied if there are any incursions on Ukraine.

He adds that the Russian public should know the Ukrainians will put "up a fierce and bloody resistance" if there is an invasion.

"Parents and mothers in Russia should reflect on that fact," he says, calling on Putin to step back.

Boris Johnson tells Russia to "step back and engage in diplomacy".

Boris Johnson says we face a “grim reality”.

More than 100,000 Russian troops are gathering on the border in what he says is “perhaps the biggest demonstration of hostility towards Ukraine in our lifetimes".

He says a further Russian invasion of Ukraine would be a "political disaster, a humanitarian disaster" and in his view "for Russia, for the world a military disaster as well".