/usr/share/doc/libstrongswan-standard-plugins/NEWS.Debian.gz is in libstrongswan-standard-plugins 5.3.5-1ubuntu3.8.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/share/doc/libstrongswan-standard-plugins/../libstrongswan/NEWS.Debian.gz