tom: geoffrey yu and mark gilbert with us.g this tuesday morning, here is taylor riggs. taylor: the u.s. has confirmed that the vice president's delayed trip to the middle east is on for this month. pence have postponed richard after arab leaders denounced the u.s. for recognizing jerusalem as israel's capital. an army lieutenant general has of the islamic set has lost land it controlled in syria and iraq, but he warned that the group can still pose a danger. and hackers are mining cryptocurrency. is widenings regime its search for cash following economic restrictions. global news 24 hours a day, powered by more than 2700 journalists and analysts in more than 120 countries. i'm taylor riggs. francine: thank you. staying with cryptocurrencies, bitcoin started the year with a tumble. let's get back to bloomberg gadfly columnist, mark gilbert and geoffrey yu, ubs wealth management head of u.k. investment office. a piece of economic research says forget bitcoin or cryptocurrencies, it is the underlying blockchain technology that w