In the past, Joe Scarborough hasn't exactly hidden his disdain for Marco Rubio, saying he reminds him of an eager student government candidate and questioning his integrity. But things have now escalated to open warfare between the two. 

Scarborough, responding to an ad in which Rubio speaks of feeling "out of place in our own country," tweeted an attack accusing Rubio of playing a "crass, offensive, nativist" [read xenophobic/borderline racist] card. Rubio has fired back, putting out a fundraising message in which he slams Scarborough as an "elitist."

Though Steve Benen, who's also the primary blogger for the MSNBC program's website, is a true-blue liberal, he thinks highly of the foreign-policy chops of some recent Republicans. In a Thursday post, Benen wrote that GOPers such as Richard Lugar and Brent Scowcroft were “learned” and “approached international affairs with [a] degree of maturity.”

That was then; this is now. Benen touched on, among other things, Ted Cruz’s pledge to “carpet bomb” ISIS and Marco Rubio’s remark that the 2003 invasion of Iraq was “not a mistake” to build a case that today’s Republican party “approaches foreign policy…with all the maturity of a Saturday-morning cartoon…The national GOP candidates are speaking to (and for) a party that has no patience for substantive details, historical lessons, nuance, or diplomacy.”

Thursday’s New York Times was particularly dense with bias against the "hard-right" and "far-right" Republican Party, starting on the front page, where a story about Latino candidates Ted Cruz and Marco Rubio turned into a criticism of GOP immigration policy, and reaching the back page, with an editorial hitting the Republican Party for its "Appalling Silence on Gun Control" (the candidates "dwelled darkly" about the actual threat of Islamic terorrism instead).

The early Wednesday morning edition of ABC’s Nightline provided the first look at the network reaction to Tuesday night’s Republican presidential debate and featured correspondent David Wright ripping it as a “bloody” affair with help from liberal comedians and scolding Chris Christie for remarks about Los Angeles mothers placing their children on school buses only to have classes canceled due to a terror threat.

MSNBC's Joe Scarborough blasted Marco Rubio in a series of posts on Twitter on Tuesday. Scarborough linked to Rubio's latest TV ad and contended that "Marco goes full-on nativist. Says he feels out of place in his own country. It's such a crass play. It's offensive." The Republican senator led the ad by stating, "This election is about the essence of America -- about all of us who feel out of place in our own country." The anchor claimed that "the second most nativist statement according to pollsters is 'these days, I feel like a stranger in my own country.'"