Rep. Tulsi GabbardTulsi GabbardSaagar Enjeti: Tuesday's Democratic debate already 'rigged' against Gabbard, Sanders Former 2020 candidate Mike Gravel: 'No question' Sanders is physically fit to be president So many issues, too many candidates and so little time to debate MORE (D-Hawaii) says she is not abandoning Bernie SandersBernie SandersSupport drops for Medicare for All but increases for public option Hillicon Valley: Warren takes on Facebook over political ads | Zuckerberg defends meetings with conservatives | Civil liberties groups sound alarm over online extremism bill On The Money: Trump touts China trade deal | Wall Street, Washington see signs for caution | Trump threatens sanctions on Turkey | Sanders proposes sharp hike to corporate taxes MORE to endorse Hillary ClintonHillary Diane Rodham ClintonSaagar Enjeti: Tuesday's Democratic debate already 'rigged' against Gabbard, Sanders Ilhan Omar raises .1 million in third quarter Bloomberg rethinking running for president: report MORE in the Democratic presidential primary.

“I’m not prepared to do that,” she told CNN anchor Wolf Blitzer Friday when asked if she would back Clinton. "There are a number of issues that I am concerned about and I look forward to discussing with you again in the future.

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“There are a lot of things I’m looking at. In particular, this issues that [Clinton] has not moved on at all in this campaign, which is this commitment to continue this interventionist regime change policy in Syria that is proving so disastrous.”

Gabbard also refused comment on whether Sanders is overstaying his welcome in the presidential race.

“I’m not going to go there,” said Gabbard, a former vice chairwoman at the Democratic National Committee (DNC). "I respect Bernie Sanders, whatever decisions that he makes. I think there’s a Democratic presumptive nominee at this point.”

Gabbard, an Iraq War veteran, additionally disagreed with President Obama’s reluctance in using the term “radical Islamic terrorism.”

“I think it’s important you identify your enemy, you know who they are, you call them by their name and you understand the ideology that’s driving them,” she said. "Obviously that’s something we need to be able to identify in order to defeat this threat.

“I understand and appreciate the president’s concern, which is he doesn’t want all Muslims to be cast with the same targeting or the same look as this handful of radical jihadists. I agree with that. No one wants that to happen.”

Sanders on late Thursday refused to concede the race for the Democratic presidential nomination to Clinton.

Clinton last week crossed the 2,382 delegate threshold for clinching her party’s presidential nod over Sanders.