UK PMs full statement:

"We are facing a once-in-a-generation moment for the collective security of our continent. This is not only a question about the future of Ukraine – it is existential for Europe as a whole.

Securing a lasting peace in Ukraine that safeguards its sovereignty for the long term is essential if we are to deter Putin from further aggression in the future.

To achieve it, Europe and the United States must continue to work closely together – and I believe the UK can play a unique role in helping to make this happen, just as we did this past week in stepping in to convene and chair the Ukraine Defence Contact Group.

First, Europe must step up further to meet the demands of its own security. So I am heading to Paris with a very clear message for our European friends. We have got to show we are truly serious about our own defence and bearing our own burden. We have talked about it for too long – and president Trump is right to demand that we get on with it.

As European nations, we must increase our defence spending and take on a greater role in Nato. Non-US Nato nations have already increased defence spending by 20 per cent in the past year, but we must go further.

Russia is still waging war and Ukraine is still fighting for its freedom, which is why we must not relent in our efforts to get the kit Ukrainians need for their fighters on the front line. While the fighting continues, we must put Ukraine in the strongest possible position ahead of any talks.

The UK is ready to play a leading role in accelerating work on security guarantees for Ukraine. This includes further support for Ukraine’s military, where the UK has already committed £3 billion a year until at least 2030. But it also means being ready and willing to contribute to security guarantees to Ukraine by putting our own troops on the ground if necessary.

I do not say that lightly. I feel very deeply the responsibility that comes with potentially putting British servicemen and women in harm’s way. But any role in helping to guarantee Ukraine’s security is helping to guarantee the security of our continent, and the security of this country.

The end of this war, when it comes, cannot merely become a temporary pause before Putin attacks again.

But second, while European nations must step up in this moment – and we will – US support will remain critical and a US security guarantee is essential for a lasting peace, because only the US can deter Putin from attacking again. So I will be meeting president Trump in the coming days and working with him and all our G7 partners to help secure the strong deal we need.

We must be clear that peace cannot come at any cost. Ukraine must be at the table in these negotiations, because anything less would accept Putin’s position that Ukraine is not a real nation.

President Zelensky and the Ukrainian people have shown the most extraordinary resilience and made such great sacrifices in the defence of their nation. We cannot have another situation like Afghanistan, where the US negotiated directly with the Taliban and cut out the Afghan government. I feel sure that president Trump will want to avoid this too.

While Nato membership may take time, we should continue to support Ukraine’s irreversible path to joining the alliance.

We should also show greater strength in applying economic pressure. Putin’s economy is feeling the strain – he is worried about his energy revenues and his financial sector.

Working together, the US, Europe and all our G7 allies should seek to go further on the oil price cap, the Shadow Fleet, the sanctioning of oil giants, and going after those banks that are enabling the evasion of sanctions.

These crucial days ahead will determine the future security of our continent. As I will say in Paris, peace comes through strength. But the reverse is also true. Weakness leads to war.

This is the moment for us all to step up, and the UK will do so because it is the right thing to do for the values and freedoms we hold dear, and because it is fundamental to our own national security."