Janet Jalil

Here's the head of the IEA, Fatih Birol.

The head of the IEA, Fatih Birol.

As well as the growing economic cost, there's also been a heavy personal cost for millions of people forced to flee their homes in Iran and in Lebanon.

The Lebanese authorities say more than a thousand people have been killed there by Israeli attacks in the past three weeks.

There are no official figures for Iran, but the US-based human rights activist news agency says more than 3,100 people have been killed in Iran since the start of the US-Israeli war.

This comes as Iranians are marking the Persian New Year, Nowruz, even as they mourn those they've lost in the Iranian regime's brutal crackdown on protesters in January and the ongoing war.

Dan Johnson has been speaking to some Iranians who've recently crossed into Turkey.

A centuries-old celebration, this year has a very different soundtrack.

In the corner of a restaurant in Van, the closest city to the border, Ali Reza Muli Hosseini plays the daf, a traditional Persian drum.

So many lives have been upended, but after crossing to Turkey, Ali Reza is reproducing the familiar sounds of home.

In Iranian culture, sadness and happiness often go hand in hand.

Children are waking up to the sound of missiles, filled with fear.

Families are leaving their homes just to survive.

I'm absolutely heartbroken by what is happening in Iran.

In the lobby of one of the hotels sheltering displaced Iranians, Anita Mohamed Pana approaches the table laid with candles and the Haft Sin display, seven items symbolising health and renewal.

Anita, 24 years old, left Iran last summer.

But now, when families are supposed to be coming together, just keeping in contact is difficult.

Every day, more people take to the road and leave Iran.

But at the border crossing, high in the snowy mountains, many still speak quietly for fear of reprisals.

But there are people heading the other way, carrying opposing views.