What You Need To Know About The Much-Discussed Carter Page FISA Document

Democrats, led by House intelligence committee ranking member Adm Schiff, left, have been dueling with Republicans, led by House intelligence committee chairman Devin Nunes, right, for months over the FISA document.

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Updated at 10:06 a.m. ET

A hot, newly released document offers a sliver of new understanding to the Russia imbroglio — but has not dislodged warring partisans from their long-term deadlock about evidence and surveillance in the case.

What is it?

The FBI has released an application to conduct surveillance of an American under the Foreign Intelligence Surveillance Act. It’s heavily redacted but still significant — these are some of the most secret papers in official Washington and are very seldom ever seen by people without specialized security clearances.