Former Secretary of State Madeleine Albright on Wednesday called the nuclear deal with Iran "historic," and said critics should read the deal before they slam it.

"I think it's very very important to study it, and for people to just flat out say it doesn't work or they're going to derail it in our Congress, I hope people don't mean it," Albright said on CNN's "New Day" Wednesday.

Albright also called the deal "one of the more complicated foreign policy issues that I've ever seen."

Albright said she believes the verification provisions, as well as the ability to snap economic sanctions quickly back into place, are enough to keep Iran from developing a nuclear weapon.

She also praised Secretary of State John Kerry and Energy Secretary Ernest Moniz for being "some of the toughest negotiators ever" because "if they could've gotten a better deal, they would've gotten a better deal," she said.

She also said the Israeli government was "wrong" for expressing its disapproval of the deal, but insisted the U.S. remains "very supportive" of Israel and the nation's security.

Albright, the first woman to lead State, served under President Bill Clinton from 1997 to 2001. She praised the framework deal reached with Iran back in April as a "good deal" that meets the "core objectives." Tuesday's long-term comprehensive deal reached between Iran, the U.S., Britain, France, Germany, Russia and China curbs Tehran's nuclear program in exchange for sanctions relief.