Donald Trump. AP Photo/Nati Harnik Real-estate mogul Donald Trump opened his Saturday-night rally by blasting the Obama administration's approach to Iran and the Islamic State terrorist group.

"I'm pretty good at signals, and I see a lot of things happening," Trump said at a campaign stop in Biloxi, Mississippi.

The Republican presidential front-runner pointed to Iranian protesters ransacking the Saudi Embassy in Tehran earlier in the day, after Saudi Arabia executed a prominent Shiite cleric.

"One thing I see out there just happened today in Tehran," Trump said. "They're burning down the Saudi Embassy, you see that? Now, what that is is Iran wants to take over Saudi Arabia. They always have. They want the oil, OK? They've always wanted that."

In order to tout his predicting ability, Trump cited his past calls for the US to bomb the oil assets of the Islamic State group, also known as ISIS.

"I've predicted a lot of things, you have to say, including, 'Get the oil, take the oil, keep the oil.' Right? I've been saying that for three years, and everybody said, 'Oh, I can't do that. I mean, this is a sovereign country.' There is no country!" Trump exclaimed.

He then blamed US President Barack Obama and his former secretary of state, Hillary Clinton, for the Islamic State's rise.

"They have a bunch of dishonest people," he continued. "They've created ISIS. Hillary Clinton created ISIS with Obama — created with Obama. But I love predicting because you know, ultimately, you need somebody with vision."

The next morning on "Fox & Friends," Trump repeated his statement that Clinton "created ISIS."

"She has a terrible record as secretary of state. I mean, she's literally created ISIS," Trump said. "If you look at her, between her and Obama, they're the ones — we have this big ISIS problem they created with their bad policies and their bad thinking."

Watch his Saturday comments below:

Trump and Clinton, the Democratic front-runner, have fiercely sparred in recent weeks. Trump took particular exception to Clinton saying that his provocative campaign-trail statements had become propaganda for the Islamic State, especially his proposal to bar Muslims from entering the US.

The Republican billionaire demanded that Clinton apologize, but her campaign replied at the time: "Hell no. Hillary Clinton will not be apologizing to Donald Trump for correctly pointing out how his hateful rhetoric only helps ISIS recruit more terrorists."

After Clinton said Trump had generally displayed a "penchant for sexism," Trump went after her husband, former US President Bill Clinton. Trump recently proclaimed that the former president has "a terrible record of women abuse," referring to the Monica Lewinsky scandal, among other things.

At his Saturday rally, Trump also blasted Hillary Clinton for a report on her husband's paid speeches while she was secretary of state. As he has done frequently before, Trump further asserted that Clinton "shouldn't be allowed to run" because of the private email system she used for her State Department work.

"She should be in jail, by the way, for what she did," Trump said. "Everybody knows she should be in jail. What she did with the emails is a disgrace," he added.