A 2023 book penned by Ryan Wesley Routh, who has been arrested in connection with Sunday’s attempted assassination of former President Donald Trump, includes multiple passages attacking Trump. The 291-page work includes Routh’s bemoaning the demise of the Iranian nuclear deal negotiated by the Obama administration and abrogated by Trump, according to Newsweek. “I must take part of the blame for the retarded child that we elected for our next president that ended up being brainless,” wrote Routh, who has indicated he supported Trump in 2016. “But I am man enough to say that I misjudged and made…