At this time of year, it is common for many of us to pick up our phones and send emails apologizing to others for the ways that we wronged them in the past year. In addition to doing personal repentance (teshuva), Rav Kook, the first Chief Rabbi of Israel, explained that we as a people (Knesset Yisrael) must also do teshuva. How do we, as a nation, ask the nations of the world for forgiveness?