A ceasefire (or truce)'s a temporary stoppage of any armed conflict, where each side of the conflict agrees with the other to suspend aggressive actions. Ceasefires may be declared as part of a formal treaty, but they've also been called as part of an informal understanding between opposing forces. Historical examples World War I On December 24, 1914, there was an unofficial ceasefire as France, the United Kingdom, and Germany sought to observe Christmas (the "Christmas truce"). No treaty was s… (More on Truce)