ULBRICHT REGIME IS SAID TO YIELD ON WEST BERLIN
Communist sources, E Berlin, rept E Ger Govt has agreed to ease tension in Berlin; say Warsaw Pact nations decided at Aug 20 meeting that W Berlin 'should cease being a site of tension and become a site of detente;' rept E Ger promised to lift some of restrictions against W Berliners; say Warsaw Pact nations stressed they will continue to treat W Berlin as 'special pol entity;' hold Ulbricht backs new policy but other E Ger leaders oppose it; say Brezhnev gave Brandt oral guarantee during their Aug 12 meeting that E Ger authorities will no longer harass civilian traffic on access routes to W Berlin
