Former deputy secretary of defense Paul Wolfowitz says in a new interview that might vote for Hillary Clinton over Donald Trump, elaborating on concerns he's expressed in recent weeks about the GOP presidential nominee's foreign policy.

The Los Angeles Times first reported in late July that the Bush administration official would "probably" select Clinton in the November election, though he was not quoted about his choice. In that interview, as in the one just posted by German outlet Spiegel Online, he warned that the United States' standing in the world would slip further during a Trump presidency.

He was even more pointed in his comments published Friday.

"We are already seeing a degree of instability in the world because Obama seems to have consciously wanted to step back. Trump is going to be 'Obama squared,' a more extreme version of the same thing," Wolfowitz said. He mentioned Trump's passivity toward Vladimir Putin and his comments about NATO as particularly alarming, and said the only way to be comfortable with the candidate's approach to international affairs is "to think he doesn't really mean anything he says."

He said he isn't comfortable choosing between Trump and Clinton no matter what. But he "might have to vote for Hillary Clinton," anyway, even though he has "big reservations about her."

Wolfowitz is among a number of Republican national security officials to go on the record with doubts about Trump, and looks to be among a number of Bush-era veterans, including deputy secretaries of state Richard Armitage and John Negroponte, as well as intelligence adviser Brent Scowcroft, to back Clinton.