MOSCOW. Sept 29 (Interfax) - Leonid Gozman, acting chairman of the federal political council at the Union of Right Forces (SPS), has called for cooperation with the authorities in order to protect and promote liberal values under new political conditions.

The party's press office released Gozman's letter to one of the former SPS leaders Boris Nemtsov, who had earlier disagreed with plans to reform this party and called them the "Kremlin project."

Total refusal to cooperate with the authorities "means for the overwhelming majority of SPS members not only the loss of their conquered positions in power and business - though they never concealed their membership in SPS - but also a refusal from any kind of political activity at all," Gozman said.

The SPS defeat at the last elections "is due not only to the provocations against us, spoilers and libel on air," he said.

"Even the mistakes of the party leadership do not explain fully the catastrophic situation we found ourselves in," Gozman said.

"The country has changed. We are no longer in tune with public sentiments," he said.

"And unless the party simply wants to vanish - and the party debates proved that the party members do not - it has to reform itself somehow to keep up with new circumstances. Or forget about protection and propaganda of liberal values," Gozman said.