5730-1970, the Rebbe extended his blessings to Rabbi Yitzchok Hutner, the head of Yeshiva Chaim Berlin, who had just arrived home after being held captive by terrorist hijackers in Jordan. The Rebbe went on to encourage the rabbi to renew his efforts to teach Torah communally, just as he suffered together with a community of Jews.1
End of Elul
1. Igrot Kodesh vol. 26 page 485