The New York Times ran a front page article defending its decision to print leaked intelligence about the Manchester bombing from the British, which aided the terrorists by giving details of the British investigation. The NYT put getting a scoop ahead of protecting the nation from terrorist attacks.
The Washington Post printed leaked intercepted communications between the Russian ambassador in Washington and the Kremlin in Moscow. I don’t know how the ambassador communicated with Moscow, but the ambassador does, and he will know not to use the same channel again unless he wants to give the information to the US. The article may have revealed that we have broken Russian codes that they did not know we had broken.
Neither newspaper seems concerned about damaging US national security either vis-a-vis the terrorists or Russia. It appears that whoever is leaking information to the press is less concerned about US national security than about other issues, like getting rid of Trump.
The inability of the Russian government to keep a secret makes the Russian spy agency, the FSB, look like a joke. The Russian ambassador, Kislyak, looks like a fool, an incompetent nincompoop. If Putin had some plan to get an inside track with the new administration, his team botched it horribly. The Russians look like the gang that couldn't shoot straight.