The Rebbe advises welcoming the heads of the Histadrut Harabonim, Rabbi Dovid Holender and Rabbi Hershel Shachter, during their visit to Israel, and assisting them in setting up meetings, even with groups on the extreme right. These actions are expected to yield positive outcomes for Yiddishkeit in Israel and the United States.
https://www.torahrecordings.com/rebbe/igroskodesh/010/006/3321