1911 Encyclopædia Britannica (1911)
“ Second Afghan War, 1878–80.—In the course of the following year (1878) the Russian government, to counteract the interference of England with their advance upon Constantinople, sent an envoy to Kabul empowered to make a treaty with the amir. It was immediately notified to him from India that a British mission would be deputed to his capital, but he demurred to receiving it; and when the British envoy was turned back on the Afghan frontier hostilities were proclaimed by the Viceroy in November 1878, and the second Afghan War began. ”
