Let me
Google  at sweden afghanistan gives:
"Sweden has been in Afghanistan since 2002 and has 900 soldiers there (February 2012). These troops are however NOT part of OEF, but are under the lead of ISAF. Sweden leads the PRT Mazari Sharif."

I was surprised when I heard Sweden was involved. Like you I expected Sweden to be neutral.

All the countries which were involved in Afghanistan including Canada should expect retaliation.  And every western country which  has been attacked had attacked Muslims. Pretty powerful reason to get our troops out.