Cornyn backs 'all options' to prevent nuclear-armed Iran

Sen. John CornynJohn CornynNew GOP ObamaCare repeal bill gains momentum Week ahead: Senators near deal to stabilize ObamaCare markets GOP eying 'blue slip' break to help Trump fill the courts MORE (R-Texas) said Sunday that the United States must be unequivocal in keeping all options on the table to stop a nuclear Iran.

Speaking to a major gathering of the American Israel Public Affairs Committee (AIPAC) in Washington, D.C., he emphasized that only a "credible threat of military action" will discourage the Iranian regime from pursuing its nuclear program. 

"In American politics, we sometimes talk about game-changing events," Cornyn said. "Well, if Iran goes nuclear, it could be the ultimate game-ender for the Middle East."

"Just wait until Iran triggers a nuclear arms race," he continued. "Just wait until it blocks the Strait of Hormuz. Just wait until it annexes Iraq. Just wait until it becomes a more aggressive state sponsor of terrorism."

The well-received speech was largely apolitical, touting Congress's bipartisan commitment to Israeli security and hardly mentioning President Obama, whom many lawmakers say should take a more aggressive stance to block Iran's nuclear ambitions.

Obama spoke last year at AIPAC's event. This year, Vice President Joe BidenJoseph (Joe) Robinette BidenBiden slams Trump over golf gif hitting Clinton Overnight Tech: Equifax hit by earlier undisclosed hack | Facebook takes heat over Russian ads | Alt-right Twitter rival may lose domain Overnight Finance: CBO to release limited analysis of ObamaCare repeal bill | DOJ investigates Equifax stock sales | House weighs tougher rules for banks dealing with North Korea MORE will deliver an address, but Obama will not.

On Sunday, Cornyn called stopping Iran's nuclear program "not optional." 

"Our only hope for a peaceful resolution … is to combine debilitating sanctions with the credible threat of military action," he said.

"The key word in that sentence is 'credible.' The mullahs will never abandon their efforts unless they believe that America is serious about keeping all options on the table," said Cornyn.