Markets are roaring - Nasdaq hits 4,000 for first time in 13 years

US indexes are surging on open, as the Nasdaq has passed 4,000 for the first time since September 2000.

That follows Germany's Dax reaching a record high, passing 9,300 for the first time. MSCI's All-Country World Index has also moved higher, reaching five year highs.

Much of that momentum comes from the successful negotiation of a deal to bring Iran in from the cold over the development of nuclear weapons.