The atomic bomb was detonated in 1945.

The atomic age (1945) was the sole event leading into the Vietnam War.

1. No atomic age, no cold war.

2. No cold war; no Vietnam War.

There was only one atomic age...which created the cold war; thus there was only one cold war; 1945-1990 & it was world wide.

The Korean War was the FIRST "Hot" battle of the Cold War. The Cold War began in 1945, which was the dawn of the "Atomic Age."

Atomic weapons started the cold war in 1945.