WASHINGTON: US Speaker Paul Ryan, the nation’s top Republican, said Thursday he was not yet prepared to support Donald Trump as the party’s presumptive presidential nominee, signaling a deep rift within the GOP. “To be perfectly candid… I’m just not ready to do that at this point,” Ryan told CNN. “I hope to though, and I want to. But I think what is required is that we unify this party.” It was a stunning declaration expected to reverberate throughout the party’s establishment and its rank and file, amid swirling concerns over whether conservatives will rally around Trump in his expected election matchup against Democrat Hillary Clinton. Ryan, who repeated he would not accept the nomination in case of a contested convention, was the Republican vice presidential nominee in 2012 and is currently second in line to the presidency.