From The Associated Press:
 President Donald Trump’s legal team is raising a broad-based attack on the impeachment case against him even as it mostly brushes past allegations in a new book that could undercut a key defense argument at his Senate trial.
Former national security adviser John Bolton writes in a manuscript that Trump wanted to withhold military aid from Ukraine until it committed to helping with investigations into Democratic rival Joe Biden. That assertion matters because Trump and his lawyers have repeatedly insisted that he never tied the suspension of security aid to political investigations.