The entire US Senate has been invited to the White House on Wednesday at 3 pm E.D.T. to hear a briefing on North Korea.

Such briefings at the White House are not unusual, but inviting all 100 Senators is unusual. The Senators will be briefed by Secretary of State Rex Tillerson, Secretary of Defense Jim Mattis, Director of National Intelligence Dan Coats the Chairman of the Joints Chiefs of Staff Gen. Joseph Dunford. For all of these men to part of the briefing is also unusual.

This comes on the heels of US concerns about North Korean threats to attack the US and it allies in the region, as well as a grave concern over their nuclear and missile tests.

House aides have said they are working with the White House to set up a similar briefing with members of the House of Representatives.