Tracking good.

Relay back channel S-WH-E-P1.

Fly High.

Q

Back channel S=Switzerland WH= White House E=Encrypted P-1=Priority 1

Swiss Back Channel Helped Defuse U.S.-Iran Crisis

The U.S. sent an encrypted fax via the Swiss Embassy in Tehran urging Iran not to escalate, followed by a flurry of back and forth messages

https://www.wsj.com/articles/swiss-back-channel-helped-defuse-u-s-iran-crisis-11578702290

Baker