Rubuta ci gaba don wannan sakin layi - The Straits ya zama mai mahimmanci a lokacin yakin duniya na (1914-1918) a matsayin hanyar haɗi tsakanin Gabas da Yammacin Gabas. Sojojin ruwan Anglo-Faransa sun kasa karɓar iko da Dardanelles
(Fabrairu - Maris 1915), amma a cikin diplomasiyar Yarjejeniyar Tsakiya ta asirce na Maris-Afrilu 1915 membobin Triple Entente sun yarda - a yayin da suka yi nasara a yakin duniya na farko - don ba da yankin Ottoman da ke sarrafawa da kuma kallon Tsakiya zuwa Daular Rasha. Sojojin Anglo-Faransa sun kaddamar da yakin Gallipoli, wani aikin da ba shi da nasara don karɓar iko da Straits bayan saukar amphibious a kan Gallipoli Peninsula (Afrilu 1915 zuwa Janairu 1916). Juyin juya halin da aka yi a Petrograd a shekarar 1917 a karshe ya dakatar da tsare-tsaren Rasha don kwace mashigar.