What is the sentiment of this news? Please choose an answer from {strong negative/moderately negative/mildly negative/neutral/mildly positive/moderately positive/strong positive}.

Activision Blizzard Inc. ATVI, -1.09% Chief Executive Bobby Kotick sent a letter to employees Friday, after a majority of quality assurance (QA) employees at subsidiary Raven Software chose to unionize. Kotick said the videogame maker will engage in "good faith negotiations" with the Communications Workers of America representing Raven Software employees, to enter into a collective bargaining agreement.
moderately positive