The diplomat said to have been stabbed inside a Stewart Street apartment building last week is not coming back to Canada.
Ambassador Georgiy Mamedov says Andrey Gorobets was stabbed 10 times and that he won't risk his life twice.
32-year-old Kevin Martin is accused of stabbing Gorobets in the Sandy Hill highrise and has been charged with aggravated assault.
The crown's case is now considered more difficult to prove, as they are unlikely to cross-examine Gorobets.
As a result, it may not go to trial.
With files from CTV Ottawa