Recently, we witnessed a joint session of congress, Both house and senate, the president, his cabinet, the heads of the various federal departments, the joint chiefs of the services, and the supreme court justices.
Essentially the entire government the U.S. plus many allied ambassadors. Tom Clancy wrote two novels that depicted a 747 loaded with fuel was flown into the capitol building, killing everyone inside. Bingo! No government.
China could do this ant time we get everyone together. We must rethink this.