"North Korean nuke test shows danger of continuing feckless Obama/Clinton foreign policy," Republican Presidential candidate and the younger brother and son of two US presidents Jeb Bush said via Twitter on Wednesday.
"If this test is confirmed, it will be just the latest example of the failed Obama-Clinton foreign policy," Rubio said. "Our enemies around the world are taking advantage of Obama's weakness. We need new leadership that will stand up to people like [North Korean President] Kim Jong-un and ensure our country has the capabilities necessary to keep America safe."
North Korea declared itself a nuclear power in 2005, and has since conducted at least three underground nuclear weapon tests which have raised concerns both in the neighboring states and worldwide.