I don't understand this terminology. In the US, probable cause is a set of circumstances that can lead to a stop or an arrest. "Probable cause for a crime" make

I don't understand this terminology. In the US, probable cause is a set of circumstances that can lead to a stop or an arrest. "Probable cause for a crime" makes no sense, unless it has a different meaning in Sweden. If the Swedish prosecutor thought she could win the case, why did she not press on with it? Hypothetically, if Assange had shown up in Sweden but refused to answer any questions, how would her case have changed? Was the issue that Assange was not present and a judge had to rule in absentia? If so, why did the prosecutor drop the case instead of allowing the judge to rule on it? This just doesn't add up.