Ka kammala wannan magana: Bayan mutuwar mahaifinsa a shekara ta 1427, Ivan ya zama Babban Yarima. Ya ci gaba da kyakkyawar dangantaka da manyan maƙwabtansa masu iko. A cikin 1429, ya halarci
Majalisar Lutsk kuma ta sanya Ryazan ta zama mai mulkin Grand Duchy na Lithuania a ƙarƙashin Vytautas. Ya sanya hannu kan yarjejeniyar zaman lafiya tare da Vasily II na Moscow a 1447 kuma ya auri dansa kuma magaji ga 'yar Vasily. Kusa da mutuwarsa ya aika da 'ya'yansa biyu zuwa kotu a Moscow don aminci. A lokacin sarautar Ivan ne tsabar kudi daga Ryazan suka fara ɗauke da sunan babban duke.