WORLD IN BRIEF : RUSSIA : Liberals Back Yeltsin --With Conditions

President Boris N. Yeltsin’s campaign was given conditional support from Russia’s main liberal movement, Yabloko, whose leader, economist Grigory A. Yavlinsky, finished fourth in first-round presidential balloting with about 7% of the vote. After a secret ballot at a meeting in a Moscow suburb, Yabloko urged its supporters to vote in the July 3 runoff “for democracy and freedom.” But the group attached conditions to its endorsement, calling for a prompt explanation of how Yeltsin plans to end the Chechnya conflict, changes in socioeconomic policies and the diluting of some of the president’s powers.