Rubio: North Korea seizing on Obama's 'weakness'
© Greg Nash

Sen. Marco RubioMarco Antonio RubioLincoln Project offers list of GOP senators who 'protect' Trump in new ad GOP Miami mayor does not commit to voting for Trump The Hill's Morning Report - Presented by Facebook - Trump wants schools to reopen, challenged on 'harmless' COVID-19 remark MORE (R-Fla.) late Tuesday blasted North Korea's reported testing of a hydrogen bomb, arguing that the isolated nation was playing off President Obama's weakness.

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"I have been warning throughout this campaign that North Korea is run by a lunatic who has been expanding his nuclear arsenal while President Obama has stood idly by," the GOP presidential candidate said in a statement.

The Florida senator, who has made national security and foreign policy a hallmark of his campaign, cast the test, if confirmed, as "just the latest example of the failed Obama-Clinton foreign policy."

"Our enemies around the world are taking advantage of Obama's weakness," Rubio said.

"We need new leadership that will stand up to people like Kim Jong-un and ensure our country has the capabilities necessary to keep America safe," he added.

Pyongyang said earlier in the day that it had successfully tested a hydrogen bomb as officials in South Korea and in the international community monitored seismic activity near a North Korean nuclear site.

The White House said that North Korea has conducted nuclear tests three times since 2006 and reiterated that the U.S. "will not accept it as a nuclear state."