When Vice President Joe Biden announced Wednesday that he would not run for president, he did so with a very clear message for Hillary Clinton.
He faulted some Democrats who "look at Republicans as our enemies."
The line, which Biden also used on Tuesday, is a direct knock against Clinton, who described Republicans as among her enemies at the first Democratic primary debate earlier this month.
But that was not the only subtle message the vice president had for a 2016 Democrat on Wednesday.
Shortly before his line admonishing labeling Republicans "enemies," Biden said, "I don't believe, like some do, that it is naive to talk to Republicans."
That appears very clearly directed at Bernie Sanders, the independent Vermont senator who has repeatedly called President Barack Obama naive for believing Republicans wanted to work with him when he came into office in 2009.
At an August 24 town hall in New Hampshire, Sanders told the audience that "the biggest mistake Barack Obama made" was not keeping his supporters together after his 2008 election and thinking that Republicans wanted to work with him.