Rubuta ci gaba don wannan sakin layi - A 1648 Majalisar Poland ta zaɓi John Casimir don maye gurbin ɗan'uwansa ɗan'uwansa a kan kursiyin Poland. Mulkin na karshe na Vasas a cikin Yaren mutanen Poland-Lithuanian Commonwealth zai mamaye yaƙin Russo-Polish (1654-67), sannan yaƙi da Sweden (" Ruwan Tsufana
"), wanda sarakunan Vasa biyu na baya suka shirya. Yawancin sojojin Sweden sun mamaye yawancin Poland a lokacin Ruwan Tsufana ba tare da yaƙi da yawa ba, saboda haɗin gwiwar gwamnonin Poland da Lithuania da masarauta. A cikin 'yan shekaru kaɗan, Commonwealth ya tashi don tilasta wa Swedes daga Poland, yana kawo ƙarshen kutse da kamfen na ɗan gajeren lokaci, duk da haka, a babban farashi. Yawancin garuruwa da garuruwa a cikin Commonwealth an kori su, an sace su kuma wasu sun ƙone su zuwa ƙasa, galibi ta hanyar rukunin abokan gaba da ke komawa baya. Kodayake ana tunawa da mulkin John Casimir a matsayin daya daga cikin bala'in bala'i kuma watakila mafi rashin nasara a tarihin Poland da Yaren mutanen Poland-Lithuanian Commonwealth, ana yawan kiransa "sarkin jarumi" wanda ya yi yaƙi da jaruntaka don ceton al'ummarsa da mutanensa.