On 17 September, Poland was also attacked by the Soviet Union. On 15 September, the Polish submarine Orzeł had sought refuge in Tallinn, at a harbour of a neutral country.
17. septembril ründas Poolat ka NSV Liit. 15. septembril oli Tallinnas kui neutraalse riigi sadamas varju otsinud Poola allveelaev Orzeł, mis interneeriti.