5 takeaways from former House Speaker John Boehner's new book

(CNN) Former House Speaker John Boehner reflects on the forces that complicated his tenure in his new book -- many of which came from within his own party.
And he shares a harsh view of former President Donald Trump, writing that he was glad to have left office before Trump was inaugurated.
In another passage, Boehner writes Trump's "refusal to accept the result of the election not only cost Republicans the Senate but led to mob violence."
Thinking about either of those alternatives is enough to make me sick," Boehner writes.
He offers his most harsh assessment of Cruz, who he said made functioning as speaker difficult in the early 2010s.
Ladies and gentleman, meet Senator Ted Cruz," Boehner writes.
You can go f*** yourself,'" Boehner writes.
So he may be nuts, but at least he's not cynical -- and a non-cynical politician is rare no matter how you slice it," Boehner writes.
Boehner's relationship with TrumpBoehner writes that the two first got to know each other playing golf before Trump entered politics.
But I also suspect he just got tired of me advising him to shut up," Boehner writes.
He says he was glad to have left office before Trump became president.
That was fine by me because I'm not sure I belonged to the Republican Party he created," Boehner writes.