Since the beginning of Syria's civil war two years ago, over two million refugees have fled the war-torn country.
Over a million of those are estimated to have crossed the border to neighbouring Lebanon.
Our reporter Gwyn Loader has been there to meet those displaced because of the fighting, and to meet the Welsh aid worker at the centre of the humanitarian crisis.
You can see more of Gwyn's visit to Lebanon on Y Byd ar Bedwar tonight at 10 o'clock on S4C
Welsh MPs debate Syria
Welsh MPs return to Parliament today to discuss a UK response to the situation in Syria.
An emergency debate has been called but no vote on military action will be taken today. Welsh charity Oxfam Cymru says if military action does happen, it will make the situation worse.
A team from Wales is preparing to set off on a 3,000-mile journey, to deliver ambulances to warn-torn Syria.
A group of Syrian people living in Cardiff raised £45,000 in just six weeks to buy two ambulances.
The ITV News website has ongoing coverage of the conflict in Syria
This report contains footage from the DEC appeal video
Syrians living in Wales have urged people to support a new appeal to raise funds for the country.
The Disasters and Emergency Committee says the humanitarian situation there is getting worse.
The committee is made up of some of the UK's leading humanitarian charities, including the Red Cross, Save the Children and Oxfam.
As David Wood reports, past appeals have been very successful here.
The ITV News website has much more on the ongoing conflict in Syria
The Disasters Emergency Committee has launched a new video to appeal for donations to help the victims of a devastating war in Syria.
More than 5,000,000 people are in urgent need of humanitarian help and half of those are children, it says.
Click here for more information