The most apparent angles are those that are topical or trending. If you wrote a book about pandemics or public health in 2020, consider yourself lucky. Landing a TV spot would be relatively easy considering the substantial news coverage on these topics.
But a topical tie-in to your book doesn't require a number one trending story. Another book I promoted, Spies of the Deep, by W. Craig Reed, is about the Russian submarine Kursk disaster that occurred at the beginning of Putin's presidency. The author spent 10 years researching Putin and is an expert on the geopolitical ramifications of international submarine warfare. Tie-ins with trending news include how Putin responds to crisis and has amassed power.
If you're struggling to find an angle between your book and the news, take a look at the calendar. Consider how your book is connected to anniversaries, holidays and month-long observances like LGBTQ Pride Month. Unapologetically Favored, written by Courtney Kittrell, is about the author's coming-of-age journey as she confronts her sexuality while serving in the U.S. Navy during the "don't ask, don't tell" policy era. It is a good example of a title that could have been pitched during Pride Month.