Bombing of Kassa 27th June 1941
Hungary still out of war but on the 27th June the city of Kassa was bombed with several people dead and wounded.
It was informed that the planes were Russian bombers but this is not known for sure.
In any case this was considered the final reason and Hungary declared war on the USSR.
More info on the subject:
http://forum.axishistory.com/viewtop...aaf38a9e697b8a