'This Week' Transcript 6-20-21: White House National Security Adviser Jake Sullivan

White House National Security Adviser Jake Sullivan was on "This Week" Sunday, June 20. This is a rush transcript and may be updated.

A rush transcript of "This Week with George Stephanopoulos" airing on Sunday, June 20, 2021 on ABC News is below. This copy may not be in its final form, may be updated and may contain minor transcription errors. For previous show transcripts, visit the "This Week" transcript archive. STEPHANOPOULOS: Martha Raddatz in Tehran, thanks very much. Let's bring in President Biden's national security adviser, Jake Sullivan. Jake, thanks for joining us this morning.