What Is the Washington Post Hiding About Its Jared Kushner Story?

From The Daily Caller:

The Washington Post editors refuse to publicly release the smoking gun “anonymous letter” that serves as the foundation of their sensational charge that White House advisor Jared Kushner sought a secret, back-channel to Russian officials.

The “anonymous letter” was part of a front-page article claiming the president’s son-in-law sought to set up a private communications channel to Russian officials during a discussion with Russian Ambassador Sergey Kislyak. The piece was published Sunday and received high profile coverage throughout the long Memorial Day weekend.