One of the top Republicans is becoming even more outspoken against Trump after announcing his retirement.
Trump's call for force makes clear "the diplomatic offer on the table is cooling," says R.C. Hammond.
Secretary of State Rex Tillerson said Wednesday that he was surprised by the president's sudden announcement.
Pyongayng fired what is believed to be an intermediate range ballistic missile Hwasong-12, the same rocket it threatened to use to strike Guam.
"Things are bad," a former official said.
"We awarded your compatriot Mr. Tillerson the Order of Friendship, but he seems to have fallen in with the wrong company and to be steering in the other direction."
Tillerson has been contradicting Donald Trump, reportedly much to the frustration of the president.
After North Korea's latest missile test, Japan asked the U.S. to call for even more economic sanctions against Kim Jong Un's regime.
Tillerson also wants to remove an envoy for the closure of Guantánamo Bay.
The president has "fumed" over recent public comments by Tillerson and Cohn but knows another shake-up could hurt his administration.
The secretary of state appeared to distance himself from the president.
North Korean ruler Kim Jong Un examined plans targeting the U.S. territory but said he was not going to give the order to strike any time soon.
Asked about Trump's latest comments, Secretary of Defense Jim Mattis instead emphasized the importance of diplomatic efforts.