William Kristol (shown) accused Senator Rand Paul (R-Ky.) of “running to the left of the Obama administration” during an appearance this weekend on Fox News Sunday.

Kristol’s latest lashing out is likely in response to Senator Paul’s victory in the CPAC (Conservative Political Action Conference) 2013 straw poll. By a narrow margin, Paul bested fellow Senator Marco Rubio (R-Fla.) in that contest.

According to reports from the CPAC convention, there were “many attendees” donning “I Stand with Rand” t-shirts, a slogan made popular on Twitter during Paul’s 13-hour filibuster earlier this month.

More specifically, Kristol probably saw himself reflected in Paul’s CPAC comment, “The GOP of old has grown stale and moss-covered. I don’t think we need to name any names here, do we?”  “The new GOP — the GOP that will win again — will need to embrace liberty in both the economic and personal sphere,” he added.

Kristol heard the bell tolling for him and his ilk and decided to strike a vengeful note in response.

The Fox News Sunday commentary isn’t the first time Kristol has bad-mouthed Paul in the press.

In an op-ed published in the Weekly Standard (an establishment Republican magazine he co-founded), Kristol called the libertarian-leaning senator the “spokesman for the Code Pink faction of the Republican Party.” Kristol was referring to the liberal group of women focused primarily on anti-war issues.

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