President Donald Trump “pleaded” with China’s Xi Jinping during a 2019 summit to help his reelection prospects, according to a scathing new book by former Trump adviser John Bolton that accuses the president of being driven by political calculations when making national security decisions.

Bolton, Trump’s national security adviser for a 17-month period, called Trump’s attempt to shift the June 2019 conversation with Xi to the U.S. election a stunning move and wrote that it was among innumerable conversations that he found concerning.

As for the meeting with the Chinese president in Osaka, Japan, Bolton wrote that Trump told Xi that Democrats were hostile to China.

At a White House Christmas dinner in 2018, Bolton said Trump asked why the U.S. was sanctioning China over its treatment of Uighurs.

In the book, Bolton describes every Trump decision as being guided by concerns for his own reelection, a claim that evokes the scandal that sparked Trump’s impeachment last year.