Just saw 1st 2 eps of #WarandPeace. Absolute Epic Genius! @tomharps & entire cast/crew magnificently talented. #BBC1 pic.twitter.com/kcgyx4gZ3V

— Gillian Anderson (@GillianA) December 18, 2015

In the UK, War and Peace will be broadcast on BBC One beginning January 3, 2016.
In the USA, it will air beginning January 18 and will be simulcast across three networks: A&E, Lifetime, and History Channel.
The cast includes Gillian Anderson as Anna Pavlovna Scherer.