Filed under....who really cares what GOP Establishment and failed Presidential candidate Mitt Romney thinks about anything, Mitt came out swinging today in a much anticipated speech, that fell far from it's mark.   Given that Romney gave us Obama by failing to mount an even moderately effective campaign, and given that Mitt Romney has lent his name to demonizing and attacking other populist conservatives across the country, the only thing interesting about Romney's speech was Trump's Response.

US presidential candidate Donald Trump has neither "the temperament nor the judgement to be president", fellow Republican Mitt Romney says.

He accused Mr Trump of bullying, misogyny and dishonesty in a speech in Utah on Thursday. "Prospects for a safe and prosperous future are greatly diminished" if Mr Trump becomes the nominee, he added. Mr Trump has meanwhile mocked Mr Romney on as a "failed candidate" and a "choke artist". "I backed Mitt Romney," said Mr Trump, addressing a crowd in Maine. "You can see how loyal he is, he was begging for my endorsement." He said Mr Romney ran "the worst campaign ever" and should have beaten Barack Obama in 2012. Many senior Republicans are alarmed at the prospect of Mr Trump securing the nomination for November's election. Several members of the Republican national security community wrote an open letter describing Mr Trump's "vision of American influence and power in the world" as "wildly inconsistent and unmoored in principle". "He swings from isolationism to military adventurism within the space of one sentence," the letter said.

Analysis - Barbara Plett Usher, BBC News, Washington

In any other election season, such a public and scathing take-down of the Republican front-runner by a party stalwart would have been absolutely extraordinary. But the rise of Donald Trump has upended political norms, and the Republican establishment is now panicking about the prospect of a presidential candidate who wants to tear up trade deals and ban Muslims from the US. Mitt Romney declared Trump unfit to lead, warning that the billionaire's policies would lead to economic recession and make America and the world less safe, and that his nomination would hand the White House to the Democrats. Other senior politicians have also begun to speak out and some business leaders are pumping millions of dollars into adverts attacking Mr Trump. The aim is to prevent him from getting enough votes to secure the nomination outright in crucial contests this month, pushing the ultimate decision to the Republican National Convention in July. The strategy could backfire though, among supporters who back Mr Trump precisely because of his outsider status.