In this 9 hour interview, Mr Markle clearly said, that he knows Meghan wouldn't have been happy about him talking about her desire to have children. He didn't care, he talked about it anyway.
Mr Markle has clearly said, what he wants, in the many interviews he's given. He wants pomp and glamour, he wants to meet the Queen, a tour at the BP, he wants to be able to talk to the press about Meghan, he wants to make money out of the royals. He wants Meghan to contact Samantha and treat her better. He wants access to the grandchildren that aren't even born yet. He won't listen to anyone, who opposed any of this.
And he will talk more. He's now angry, and will lash out more. His blackmailing strategies didn't work, so he will reveal information about Meghan and her private life. He will drag Doria more. He's angry that Doria is getting praise, and that Meghan isn't falling in line with his demands.