Meanwhile, Tyrion takes one for the team and enters the lion's den to attempt to reason with his sister. The two siblings long-simmering resentment overflows as Cersei accuses Tyrion of wanting to destroy the Lannisters. He tests his luck by threatening Cersei to have The Mountain kill him on the spot and end their feud for good. She looks tempted, but instead she decides to hear Tyrion out as he tries to convince her that things are dire for the realm. Of course, Cersei doesn't care about the realm, she only cares about her family. It's at this point that Tyrion realises his sister is pregnant.
The scene ends abruptly and cuts to Tyrion revealing to Daenerys and the others that he struck a deal with his sister. She supposedly even vowed to send part of her army North. However, the terms of their deal aren't revealed to the viewers, leaving what exactly Tyrion may have promised his sister a mystery to be solved in season eight.