A cikin Satumba 1331, Charles ya yi ƙawance tare da Otto the Merry, Duke na Austria, da Bohemia.Ya kuma aika da ƙarfafawa zuwa Poland don yaƙar Teutonic Knights da Bohemians.A cikin 1332 ya sanya hannu kan yarjejeniyar zaman lafiya tare da John na Bohemia kuma ya shiga tsakani tsakanin Bohemia da Poland.A lokacin rani na 1335, wakilan John na Bohemia da sabon Sarkin Poland , Casimir III, sun shiga tattaunawa a Trencsén don kawo karshen rikice-rikicen da ke tsakanin kasashen biyu.Tare da sasancin Charles, an cimma matsaya a ranar 24 ga Agusta: John na Bohemia ya yi watsi da da'awarsa ga Poland kuma Casimir na Poland ya yarda da John na Bohemia na Suzerainty a Silesia.A ranar 3 ga Satumba, Charles ya rattaba hannu kan wata yarjejeniya tare da John na Bohemia a Visegrád, wanda aka kafa da farko a kan Dukes na Austria.Bayan gayyatar Charles, John na Bohemia da Casimir na Poland sun hadu a Visegrád a watan Nuwamba.A lokacin taron na Visegrád, sarakunan biyu sun tabbatar da sasantawar da wakilansu suka yi a Trencsén.Sarakunan uku sun amince da wata ƙungiyar tsaro ta hadin gwiwa a kan Habsburgs, kuma an kafa sabuwar hanyar kasuwanci don baiwa 'yan kasuwa da ke tafiya tsakanin Hungary da Daular Roma mai tsarki damar wucewa Vienna.Babonići da Kőszegis sun kulla kawance da Dukes na Ostiriya a cikin Janairu 1336. John na Bohemia, wanda ya yi iƙirarin Carinthia daga Habsburgs, ya mamaye Austria a cikin Fabrairu.Casimir III na Poland ya zo Austria don taimaka masa a karshen watan Yuni.Ba da daɗewa ba Charles ya shiga su a Marchegg.Shugabannin sun nemi sulhu kuma sun sanya hannu kan yarjejeniyar zaman lafiya da John na Bohemia a watan Yuli.Charles ya rattaba hannu kan wata yarjejeniya da su a ranar 13 ga Disamba, kuma ya kaddamar da wani sabon balaguro kan Austria a farkon shekara mai zuwa.Ya tilasta wa Babonići da Kőszegis su ba da gudummawa, kuma an tilasta wa na karshen su mika masa kagaransu da ke kan iyaka don musanyawa ga manyan kasoshi masu nisa.Yarjejeniyar zaman lafiya ta Charles da Albert da Otto na Ostiriya, wadda aka rattaba hannu a ranar 11 ga Satumba 1337, ta haramta wa sarakuna da Charles su ba da matsuguni ga batutuwan tawaye na ɗayan.