Former New York City Mayor Rudy Giuliani on Monday said terrorists failed to successfully strike the United States in the eight years before President Obama and former secretary of State Hillary ClintonHillary Diane Rodham ClintonA path to climate, economic and environmental justice is finally on the horizon Polling misfired in 2020 — and that's a lesson for journalists and pundits Biden flexes presidential muscle on campaign trail with Virginia's McAuliffe MORE took office.

"Under those eight years, before Obama came along, we didn't have any successful radical Islamic terrorist attack in the United States," Giuliani said Monday ahead of a speech by Republican presidential nominee Donald TrumpDonald TrumpCuban embassy in Paris attacked by gasoline bombs Trump Jr. inches past DeSantis as most popular GOP figure in new poll: Axios Trump endorses Ken Paxton over George P. Bush in Texas attorney general race MORE on foreign policy.

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"They all started when Clinton and Obama got into office."

Giuliani was the mayor of New York City during the Sept. 11, 2001, terrorist attacks. In making the remarks about terrorism, he was commending Trump's running mate, Indiana Gov. Mike PenceMichael (Mike) Richard PenceWant to evaluate Donald Trump's judgment? Listen to Donald Trump Will Pence primary Trump — and win? Poll: 73 percent of Democratic voters would consider voting for Biden in the 2024 primary MORE, for his work in Congress after 9/11.

"He's a member of the Foreign Affairs and Judiciary committees, and during the time of Sept. 11, when we went through the worst foreign attack in our history, since the War of 1812," Giuliani said.

"Remember, we didn't start this war. They did. We don't want this war. They do. And they didn't start it even in 2001. They attacked the World Trade Center in 1993 and they attacked it under the ideology of radical Islamic extremism to create a caliphate. ... Mike Pence understands this."