Why did the Allied troops want to control the Dardanelles?

The Allied troops aimed to control the Dardanelles during World War I to secure a vital supply route to Russia and to open a new front against the Ottoman Empire. Capturing the Dardanelles would allow for easier naval access to the Black Sea, facilitating the movement of troops and resources. Additionally, it was hoped that this campaign would help to knock the Ottoman Empire out of the war and bolster support for the Allies. Overall, controlling the Dardanelles was seen as a strategic move to weaken the Central Powers and enhance Allied military efforts.