Our ______ as a nation is threatened by these separatist forces.

A．nuclear war will definitely not take place
B．international agreements are now reached more and more easily
C．man is beginning to realize that nuclear war is his greatest enemy
D．world opinion is in favor of nuclear war

A．abolish nuclear weapons
B．let the stronger side take over the world
C．improve bacteriological and chemical weapons
D．settle international issues through negotiation