A warm welcome to the programme, briefing you on all you need to know in global news, business and sport. And we would like to hear from you about facebooks soon to be launched cryptocurrency. Will you be signing up . Do you trust facebook with your spending . Get in touch. Just use the hashtag bbcthebriefing. The United States is to deploy another 1,000 troops to the middle east, as tensions rise with iran. The us military has released what it says is further proof that iran was behind the attacks on two oil tankers in the gulf of oman last week. The government in tehran has denied any involvement. 0ur north america correspondent peter bowes reports. More evidence that iran is to blame. These are the photographs the pentagon says offer further proof that the attacks on two tankers in the gulf of oman were carried out by iranian forces. This image shows what the us military describes as the remnants of the magnetic attachment device of an unexploded limpet mine placed on one of the tan