Ze'ev Jabotinsky (1880-1940) was a writer, orator, and Zionist leader. Born in Russia, he worked to develop Jewish self-defense units and to promote the revival of Hebrew. Jabotinsky formed the World Union of Zionist Revisionists when he felt the official Zionists were not aggressive enough against the British. He founded the Haganah.
For a complete review of the man, his life and politics, visit the Ze'ev Jabotinsky website.