"[The government] came to power on Russian bayonets and tanks, spilling a sea of blood," Khasbulatov told Interfax.
Khasbulatov, an ethnic Chechen who remains popular in Chechnya, led a parliamentary rebellion against President Boris Yeltsin in Moscow in 1993.
But Yeltsin conceded recently that Khasbulatov might be able to help achieve a peace accord palatable to Chechens.
On Thursday, Khasbulatov said the leaders of the Moscow-supported government "live in their narrow world isolated from the trouble of the people."
Moscow installed the National Revival government after invading Chechnya in December to quash its three-year bid for independence.
Khasbulatov also pushed for more negotiations, saying: "A round table is better than a war."
Meanwhile, the situation across the Caucasus Mountains republic remained tense.
The village of Sernovodsk, on Chechnya's western border with the ethnic republic of Ingushetia, has been surrounded by Russian troops for several days, according to local reports.
Hundreds of Chechens and Ingush are picketing nearby to demand that the Russians free the town, which Moscow says is controlled by armed rebels.
In the capital, Grozny, Chechens threatened to halt peace talks unless Russian troops stop "violating human rights" in Sernovodsk, Interfax said.
But in two other Chechen towns, rebels resumed disarmament Thursday, as part of a July 30 military accord. Chechen fighters turned over weapons in Alkhazurovo and Komsomolskoye in the south of the republic, Interfax said.
The accord, which calls for rebel disarmament, a partial Russian pullout and prisoner exchanges, is supposed to pave the way for elections in Chechnya, with the republic's political status to be determined later.
But Khasbulatov said Thursday that elections will be impossible without a legitimate government -- which the National Revival is not, he said.
Moscow says about 13,000 troops have been pulled out of Chechnya, but thousands more remain. The warring sides are frequently accusing each other of dragging their feet in implementing the accord.
Defense Minister Pavel Grachev, speaking to World War II veterans in Moscow on Thursday, said the rebel Chechens regard the treaty as "a ploy for the sake of military buildup."
He estimated the rebel strength at 6,000 fighters. The separatists have recently acquired 12 tanks and 16 armored vehicles from unspecified sources, he said.
A Message from The Moscow Times:
Dear readers,
We are facing unprecedented challenges. Russia's Prosecutor General's Office has designated The Moscow Times as an "undesirable" organization, criminalizing our work and putting our staff at risk of prosecution. This follows our earlier unjust labeling as a "foreign agent."
These actions are direct attempts to silence independent journalism in Russia. The authorities claim our work "discredits the decisions of the Russian leadership." We see things differently: we strive to provide accurate, unbiased reporting on Russia.
We, the journalists of The Moscow Times, refuse to be silenced. But to continue our work, we need your help.
Your support, no matter how small, makes a world of difference. If you can, please support us monthly starting from just $2. It's quick to set up, and every contribution makes a significant impact.
By supporting The Moscow Times, you're defending open, independent journalism in the face of repression. Thank you for standing with us.
Remind me later.