war room

from The American Heritage® Dictionary of the English Language, 5th Edition.

• noun A room in which strategic decisions, especially for a military or political campaign, are made.

from the GNU version of the Collaborative International Dictionary of English.

• a room in a military headquarters to which the current status of military operations is reported from the field, and the situation is evaluated, as by use of maps showing the locations of all relevant military units, both friendly and hostile. The room may also be used to plan tactics or strategy.
• A room at the center of operations of an organization, such as a large business enterprise, where the status of operations may be discussed, or plans made, and often containing special equipment, such as charts, maps, or computers, to assist such functions.

from Wiktionary, Creative Commons Attribution/Share-Alike License.

• noun A command center; a single location which serves as the point of coordination for military activities.
• noun By extension, a single location from which any activity is directed.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

• noun a room where strategic decisions are made (especially for military or political campaigns)