Julian Assange, the Australian-born face of the [whistleblowers' website] WikiLeaks, is in hiding overseas after the US military arrested one of its own soldiers, Bradley Manning, and accused him of leaking a a secret video of a US Army helicopter gunning down civilians in Iraq in 2007. The video was released on Wikileaks this year, and the US is now desperate to find Mr Assange before he leaks thousands of hugely embarrassing state diplomatic cables, which are believed to discuss the Middle East, its governments and leaders. Mr Assange, 38, is an enigmatic figure who moves frequently between countries and has bases in Iceland, Kenya, Australia and elsewhere. He was due to speak at a conference in Las Vegas on [June 11] but cancelled shortly before he was due to appear. At the same time [a US website] published an article claiming that Pentagon investigators were engaged in a "manhunt" for Mr Assange. There have even been suggestions that Mr Assange may be in physical danger. Daniel Ellsberg, who famously leaked a top secret US history of the Vietnam War dubbed the Pentagon Papers at the height of that war, told US television he had spoken to Mr Assange last week. "He … understood that it was not safe for him to come to this country," Mr Ellsberg said.