US President says Nato is more united than ever

The United States President Joe Biden says Nato has never been more united. We'll get a view on this from the Czech ambassador to NATO.

Also in the programme, we go to Lviv Central station in Ukraine, to hear from people who keep the trains running, arrange for provisions to be taken to the front lines, and for people to be moved to safety.

And new sanctions against Russia have been announced, but President Zelensky says they have come "a little late." We have the latest on this.