With the outbreak of World War II, the Yeshiva was forced into exile and eventually it found refuge in Kobe, Japan and Shanghai, China.
While the student body, led by Rabbi Chaim Shmuelevitz eventually relocated to the United States (see Mir yeshiva (Brooklyn)), Reb Leizer Yudel established a new branch of the Mir Yeshiva in Jerusalem with a handful of advanced Talmudic students from Etz Chaim Yeshiva.

Eventually Shmuelevitz came to Jerusalem to serve as Rosh Yeshiva under his father-in-law.
Reb Leizer Yudel's son Moshe Finkel was the main fundraiser for the newly established Yeshiva and helped the Yeshiva financial support its great numbers.
Another son, Rabbi Chaim Zev Finkel became the Mashgiach of the Yeshiva.
Yet another son, Rabbi 
Beinish Finkel succeeded his brother-in-law Rabbi Chaim Shmuelevitz as Rosh Yeshiva upon the latter's death in the 1979.
With the outbreak of World War II, the Yeshiva was forced into exile and eventually it found refuge in Kobe, Japan and Shanghai, China. While the student body, led by Rabbi Chaim Shmuelevitz eventually relocated to the United States (see Mir yeshiva (Brooklyn)), Reb Leizer Yudel established a new branch of the Mir Yeshiva in Jerusalem with a handful of advanced Talmudic students from Etz Chaim Yeshiva.
Eventually Shmuelevitz came to Jerusalem to serve as Rosh Yeshiva under his father-in-law. Reb Leizer Yudel's son Moshe Finkel was the main fundraiser for the newly established Yeshiva and helped the Yeshiva financial support its great numbers. Another son, Rabbi Chaim Zev Finkel became the Mashgiach of the Yeshiva. Yet another son, Rabbi 
Beinish Finkel succeeded his brother-in-law Rabbi Chaim Shmuelevitz as Rosh Yeshiva upon the latter's death in the 1979.
Eliezer Yehuda Finkel (b. 1879)