“What I did not want to be is part of a photo opportunity or a political effort on the part of the White House,” Sanders told MSNBC’s Chris Hayes on Wednesday.

In an unusual move, the White House invited all 100 senators to attend the briefing at the Eisenhower Executive Office Building.

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“These highly — supposedly — highly classified briefings always take place in what’s called the SCIF room in Congress, which is a very well-designed room to prevent any cybersecurity issues, with security issues in general."

Despite calling for bipartisan efforts to deal with North Korea, Sanders said he declined to be part of the White House “roadshow.”

“The issue of North Korea is enormously important, and we need bipartisan efforts to control North Korea’s very aggressive nuclear efforts, but I did not want to be part of a roadshow for the White House,” he said.

The meeting came after the administration said it would take a hardline approach toward the increasingly hostile state amid rising tensions.

President Trump briefly joined the meeting.

Sanders said such briefings are typically held at the Capitol in a Sensitive Compartmented Information Facility (SCIF) room, which is a specially and securely designed room for highly classified congressional briefings.