Q&A: What is 'unmasking' and why would Obama adviser do it?

WASHINGTON (AP) — President Barack Obama’s national security adviser Susan Rice is in the center of a political storm this week, drawn in by new revelations about her handling of intelligence reports in the waning days of the Obama administration.
According to a U.S. official, President Donald Trump’s national security aides discovered after the inauguration that Rice had asked for the identities of Trump associates who were referenced in intelligence reports. Revealing the id