Already, one megadeal is at risk because of the U.S.-China trade spat: a massive order by Chinese airlines for Boeing Co. planes that may be worth more than $30 billion.
A Bloomberg News story on Wednesday detailed how important the deal is to both sides, and how the talks may take a precarious turn because of escalating tensions between their countries. But the Boeing matter draws attention to an even a bigger risk: namely, that the trade war could complicate giant M&A deals, the kind that have kept the market together even as other types of dealmaking have slowed.