No one knows if it was due to disease or to their choosing to leave because of threat of warfare.

On the other hand, the institution of oaths also played down the threat of endemic warfare.

Cooperation with American and British agencies took place in many forms and it included the fight against the threat of biological warfare.

Societies were also formed in Rhode Island in 1810, as the threat of warfare loomed.

IMVs were developed in response to the threats of modern warfare, with an emphasis on crew protection and mine-resistance.

Contemplating a world living in the shadow of the threat of nuclear warfare, Orwell wrote:

The program was a part of the nation's Cold War defense against the generally understood threat of biological warfare.

The political situation was unstable, and there was a constant threat of renewed warfare.

Because the threat of nuclear warfare was so awful, it was first thought that it might make any war of the future impossible.

Choctaw land was systematically obtained through treaties, legislation, and threats of warfare.