A former British Army chief has told Sky News the government must change the law on the party drug MDMA - commonly known as ecstasy - ahead of a trial using it to treat soldiers with PTSD. Sky's Thomas Moore spoke to veterans involved in MDMA-assisted therapy about how it could help treat trauma. Anyone feeling emotionally distressed or suicidal can call Samaritans for help on 116 123 or email samaritans.org in the UK. Read more: https://news.sky.com/video/why-scientists-say-mdma-could-treat-