Welsh anti-terror police have voiced concern over the rising number of young people risking their lives by travelling to war-torn Syria.
It's feared more British citizens are making the journey to fight for rebel forces in the country - with some dying as a result.
Today they appealed for women in the communities affected to contact them if relatives are thinking about travelling to the country.
Prime Minister David Cameron said the Government was "very concerned" about the terror threat posed by the conflict in Syria.
His comments come as a national campaign to urge British Muslim women to warn their husbands and sons against travelling to Syria has been launched.
Mr Cameron said: "We are very concerned as a Government and as a country about the threat of terrorism coming out of Syria. What we are doing is trying to prevent people from travelling there.
"And people can help: if you know someone who is in danger of being radicalised, with radical views, and is thinking of travelling to Syria, then the best thing to do is to talk to the police, talk to the authorities so that we can help you to stop that from happening."
The Association of Police Chiefs has released a document giving information and advice on travel to Syria. This comes on the day a national campaign is launched to stop would-be British terrorists visiting Syria.
The MET police document outlined terrorism risks, what could happen to you if you visited Syria, what the UK government is doing to help Syrians and how you help the Syrian people.
Some of the points outlined in the document are as follows:
- Families may face ransom demands.
- Assad uses the presence of UK nationals in Syria to support claims that his regime is fighting foreign terrorists.
- If you travel for humanitarian reasons, you are very likely to come into contact with terrorist groups and you may get drawn into their activities.
Senior National Coordinator for Counter Terrorism Policing Helen Ball will be hosting a live webchat on the MET website at 2pm.
Police have described the number of people from Wales travelling to Syria as "worrying".
Assistant Chief Constable Liane James, from South Wales Police, told ITV News: "We need to safeguard the young children of Wales."
The number of people travelling to Syria from the UK is judged to be in the low hundreds. Today a campaign has been launched to make people aware of the dangers and let them know how they can help safely and legally.
A national campaign has been launched today to highlight the dangers young people face when travelling to Syria.
Events are being held across the UK to raise awareness, and provide advice on how people can support the Syrian cause both safely and legally.
South Wales Police are supporting the campaign.
There are "already many parents" who have contacted the police to stop their children fighting in the Syrian civil war, Dr Usama Hasan told Daybreak.
Dr Hasan, senior researcher at the anti-extremism organisation Quilliam Foundation, said the national awareness campaign to encourage parents to stop their child from fighting alongside jihadis in Syria was "very important" and urged Britain to be "open" about their citizens joining the war.
"Britain should be open about this issue ... hundreds of our fellow citizens are going to these places and let's understand the issue by trying to see what we can do about it," he added.
A national campaign has been launched today aimed at protecting our young people from the dangers of travelling to Syria.
Women in particular are being encouraged to reach out to other women who are concerned about youngsters who may be planning to travel to the country.
Similar events are being held across the whole of the UK, in an effort to reach out to as many women from the affected communities as possible.
It has been recognised that whilst some young people want to travel to fight, many others want to offer aid and support to the Syrian people.
One of the key messages the campaign aims to get across, is the importance of letting people who genuinely want to help the Syrian cause know how they can do so both safely and legally.
The advice is to donate to registered charities.
The number of people travelling to Syria from the UK is judged to be in the low hundreds.
Information available shows the number of Syria-related arrests has increased substantially in 2014.
Shadow Middle East minister Ian Lucas speaks about conditions for Syrian refugees in Lebanon. The Wrexham MP has just returned from a trip to see the refugee camps for himself.
In this interview for Sharp End, he tells Adrian Masters what he heard and saw about the difficulties people fleeing from the fighting in Syria are still experiencing.
Wrexham MP and Shadow Middle East Minister Ian Lucas has just returned from Lebanon where he's witnessed first hand the plight of people fleeing the civil war in Syria. He'll be speaking about his experiences in this week's Sharp End.
You can hear more about the situation in Lebanon and what Ian Lucas experienced at 1035pm on ITV Cymru Wales. Below are some of the photos he took during his visit.
The MPs were surprised to see snow around the camps. Wintry weather is adding to the difficulties faced by people fleeing the fighting in Syria.
The refugee camps aren't official and lack basic amenities.