WASHINGTON, Oct. 16— A Federal judge ruled today that the Soviet Union violated international law by seizing Raoul Wallenberg, a Swedish diplomat, in Budapest in 1945.
United States District Judge Barrington D. Parker made the ruling in a suit filed on behalf of Mr. Wallenberg’s half-brother, Guy von Dardel, and his legal guardian, Sven Hagstromer, seeking either Mr. Wallenberg’s release or the return of his remains.