Editors. "Sweden agrees to aid Tsar Basil Shuisky of Russia against Poland". The Literary Encyclopedia. First published 01 February 2011
[http://www.litencyc.com/php/stopics.php?rec=true&UID=15662, accessed 20 September 2014.]
An alliance is signed at Viborg between Charles IX of Sweden and Tsar Basil Shuisky of Russia. This is an alliance on two fronts: the Tsar needs Sweden's assistance to quash False Dmitri II, who is attempting to claim the throne, while both are threatened by Sigismund III of Poland, who is advancing towards the Russian city of Smolensk.
Please log in to consult the article in its entirety. If you are not a subscriber, please click here to read about membership. All our articles have been written recently by experts in their field, more than 95% of them university professors.