The parliaments of the three Baltic republics prepared to hold their first joint session Saturday to show a unified front against recent threats from the Soviet government.

In an interview, Lithuanian President Vytautas Landsbergis said the Baltics want their unity of position to be seen "not only in the form of declarations and documents but in the meeting of lawmakers."The parliaments of Lithuania, Latvia and Estonia were to meet in Vilnius to discuss tough statements by Soviet President Mikhail S. Gorbachev and Defense Minister Dmitry Yazov concerning the Baltics' independence drives.

On Friday, talks were held in Moscow between Soviet and Lithuanian representatives on resolving an impasse that began March 11, when the parliament of the Baltic republic declared independence.

The talks, however, were unsuccessful, Deputy Lithuanian Prime Minister Romualdus Ozolas told the Baltic News Service.

"Our position is based on international law, and the position of the Soviet side is based on Soviet laws. And our positions are so different, that we could not reach a common formula," he said.

Ozolas and Soviet Deputy Premier Vitaly Doguzhiyev were unable to set an agenda for more detailed talks, but they did agree to meet next week, according to the Lithuanian news agency, ELTA.

Accepting an invitation from Landsbergis, the 220 members of the Lithuanian parliament were to meet with about 200 Latvian and 100 Estonian legislators in Lithuania.