This piece originally appeared in Counterpunch. John Pilger can be reached through his website.

The siege of Knightsbridge is both an emblem of gross injustice and a gruelling farce.  For three years, a police cordon around the Ecuadorean embassy in London has served no purpose other than to flaunt the power of the state. It has cost £12 million. The quarry is an Australian charged with no crime, a refugee whose only security is the room given him by a brave South American country. His "crime" is to have initiated a wave of truth-telling in an era of lies, cynicism and war.

The persecution of Julian Assange is about to flare again as it enters a dangerous stage. From August 20, three quarters of the Swedish prosecutor's case against Assange regarding sexual misconduct in 2010 will disappear as the statute of limitations expires. At the same time Washington's obsession with Assange and WikiLeaks has intensified. Indeed, it is vindictive American power that offers the greatest threat – as Chelsea Manning and those still held in Guantanamo can attest.

The Americans are pursuing Assange because WikiLeaks exposed their epic crimes in Afghanistan and Iraq: the wholesale killing of tens of thousands of civilians, which they covered up, and their contempt for sovereignty and international law, as demonstrated vividly in their leaked diplomatic cables. WikiLeaks continues to expose criminal activity by the US, having just published top secret US intercepts – US spies' reports detailing private phone calls of the presidents of France and Germany, and other senior officials, relating to internal European political and economic affairs.

None of this is illegal under the US Constiution. As a presidential candidate in 2008, Barack Obama, a professor of constitutional law, lauded whistleblowers as "part of a healthy democracy [and they] must be protected from reprisal". In 2012, the campaign to re-elect President Barack Obama boasted on its website that he had prosecuted more whistleblowers in his first term than all other US presidents combined. Before Chelsea Manning had even received a trial, Obama had pronounced the whisletblower guilty. He was subsequently sentenced to 35 years in prison, having been tortured during his long pre-trial detention.