Adolf Hitler's war record is among hundreds of thousands of First World War documents to be published on an online archive, reports in London said.

Turkey and Armenia signed a landmark agreement on Saturday to establish diplomatic relations and open their sealed border after a century of enmity, as US Secretary of State Hillary Rodham Clinton helped the two sides clear a last-minute snag.

Turkey and Armenia plan to sign an agreement on Saturday establishing diplomatic ties in hopes of ending a century of acrimony over their bloody past and reopening their border, but nationalists on both sides are seeking to derail its implementation.