But on the balcony of the Ecuadorian embassy in London, where the WikiLeaks founder has been holed up since June 2012, he
"The road is far from over".
He says says his battle is not over, and "the proper war is just commencing".
Mr Assange originally faced three sex allegations, all of which he denied. The maximum sentence for that offense is a year in prison.
He also tweeted: "Detained for 7 years without charge by while my children grew up and my name was slandered. It is not something I can forget".
According to reports, in a brief statement by the prosecutor, in this case, said: "Director of Public Prosecution, Marianne Ny, has today chose to discontinue the investigation regarding suspected rape by Julian Assange".
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She said it was "regrettable we have not been able to carry out the investigation", and added: "We are not making any pronouncement about guilt".
"It is a scandal that a suspected rapist can escape justice and thereby avoid the courts", the lawyer, Elisabeth Fritz, told AFP in an email. The UK government said on Friday it had no involvement in Sweden's decision to drop the investigation.
He has been remanded in custody in absentia by Swedish authorities, who issued an arrest warrant relating to a 2010 rape allegation which Assange denies.
The Swedish Prosecution Authority on Friday said it dropped a rape investigation targeting WikiLeaks founder Julian Assange and will revoke his arrest warrant. Prosecutors were trying to determine, among other things, if Assange had sex with the woman while she was asleep and without using a condom. Assange fears Sweden will hand him over to USA authorities who could prosecute him for publishing the documents and possibly sentence him to death.
Swedish director of public prosecutions Marianne Ny filed the motion to the Stockholm District Court on Friday, but Assange still faces arrest in the United Kingdom for failing to turn up to court.
The prosecutor did, however, point out that the investigation "could be reopened if Assange returns to Sweden before the statute of limitations ends in 2020".
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He said Yates was appointed by the Obama administration and that she was "a strong supporter of [Hillary] Clinton". She had come here, given a heads-up, told us there were materials and at the same time, we did what we should do.
"Julian Assange has been a victim of a huge abuse of procedure".
"I have therefore today lifted the decision to remand Julian Assange in his absence", she added.
Wikileaks founder, Julian Assange, is finally free to leave the Ecuadorian embassy in London whenever he wishes to do so.
WikiLeaks founder Julian Assange says his legal team will contact United Kingdom officials to seek a way forward in resolving in resolving his status. "He's of course happy and relieved but is critical of the fact that this has been going on for such a long time".
Another lawyer, Christophe Marchand, told AFP that "We have been waiting a long time for this decision".
Assange stays right where he is, in the red-brick flat at 3 Hans Crescent, continuing his work with WikiLeaks.
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The investigation had suffered from multiple procedural complications since it began. Assange is also accused of breaching his bail conditions in the United Kingdom for fleeing to Ecuador's embassy, she noted. Because Assange refused to surrender to British authorities in June 2012, the Metropolitan Police in London have a warrant out for his arrest, and have said they would feel "obliged" to execute that warrant if Assange sets foot on British soil.