In March 1953, Moscow had declined Ulbricht’s request for tightening up the sector border in Berlin, then the major loophole in the SED leadership’s efforts to seal off East Germany. In the aftermath of the demonstrations and unrest in Berlin, the SED leadership apparently tried to reintroduce the idea of increased “border security” in Berlin. Eager to salvage whatever was left of its political position as a champion of German unity, Moscow again held such measures as politically “disadvantageous” and “unacceptable.” Certainly, the Kremlin was also aware of the continued widespread resentment among the Berlin and GDR population which made any more restrictive measures a risky undertaking. Instead, the Soviets urged the SED to increase its “fight against hostile elements” in West Berlin—an issue that would become more and more the focus of Soviet attitude on Berlin.