Throughout this period, the Vandals survived several Roman attempts at a counterstrike: the Eastern Roman general Aspar had led an unsuccessful expedition in 431, an expedition assembled by the Western emperor Majorian (r. 457–461) off the coast of Spain in 460 was scattered or captured by the Vandals before it could set sail, and finally, in 468, Geiseric defeated a huge joint expedition by both western and eastern empires under Basiliscus. In the aftermath of this disaster, and following further Vandal raids against the shores of Greece, the eastern emperor Zeno (r. 474–491) concluded a "perpetual peace" with Geiseric (474/476).