Origin of back channel
OTHER WORDS FROM back channelback-chan·nel, adjectiveback-chan·nel·ing, noun
How to use back channel in a sentence
Reports circulating in Israel on Monday suggested that Obama has opened another secret backchannel, this time to Hezbollah.7 Questions About the Geneva Deal on Iran You Might Be Asking|Matthew Kalman|November 25, 2013|DAILY BEAST
When Abbas pressed ahead with the U.N. initiative, Netanyahu terminated the Peres backchannel.Shimon Peres’s Influence Wanes as Israel Grows More Bellicose Toward Iran|Dan Ephron|March 2, 2012|DAILY BEAST
It essentially uses the award as a backchannel to decisively endorse the Polish version of the Katyn events.