Davie, Florida (CNN)His long tenure in Washington -- and his age -- have been cited as possible glitches to a Joe Biden candidacy, but the vice president wholeheartedly embraced those aspects of his biography Thursday, using them as proof he's judged the Iran deal accurately.

Speaking to a roundtable of Jewish community leaders outside Miami, Biden made repeated references to the four decades he's spent in elected office, most of them in Washington, characterizing himself as a longtime insider on the country's foreign policy.

And he used Soviet-era nuclear deals, the names of which he admitted mean little to younger Americans, to bolster his authority on negotiating with hostile regimes.

"I have as of today traveled 992,894 miles for the President," he said, pulling a card from his pocket that lists his mileage to date. "I have met virtually every major leader in the world. I know these guys. I know them better than anyone in the administration because I've been hanging around so long."