Official promo of Game of Thrones season 7 released

The official promo of the HBO television series Game of Thrones season 7 has been released. The promo titled 'Long Walk' features the characters Daenerys Targaryen, portrayed by Emilia Clarke, Cersei Lannister, played by Lena Headey, and Jon Snow, played by Kit Harington. The new season is set to premiere on July 16.