It should be noted that the prosecutor had three options:
1: Drop the charges.
2: Drop the arrest order but continue the investigation. To do so require a plan which would progress the investigation.
3: Charge Assange with rape, arguing that the evidence collected so far is enough for a case.
And we got the first option, and thus we can conclude that the prosecutor don't have enough evidence to go to court and have no plans on how to further the investigation.
1: Drop the charges.
2: Drop the arrest order but continue the investigation. To do so require a plan which would progress the investigation.
3: Charge Assange with rape, arguing that the evidence collected so far is enough for a case.
And we got the first option, and thus we can conclude that the prosecutor don't have enough evidence to go to court and have no plans on how to further the investigation.