Russian opposition politician Leonid Gozman has been sentenced to another 15-day jail term after serving the same term on a charge of "equating" Soviet-era Russia with Nazi Germany.

The Tver district court in Moscow sentenced the 72-year-old Kremlin critic on September 14 after finding him guilty of writing in an online article in 2013 that the Soviet regime was no better than the regime that ruled Nazi Germany.

Gozman's first 15-day sentence was handed for a similar text of his article written in 2020. He was rearrested late on September 13 as he was leaving a detention center after finishing his term.

The law criminalizing equating the Soviet and Nazi regimes was adopted in 2021.

Gozman said at the hearing on September 14 that his health state worsened during his initial 15-day jail term. His lawyers insisted he cannot be jailed due to his health and provided the court with medical documents that confirmed it.

Gozman also said the case against him has been ordered, as the article in question that was written nine years ago was found by the investigators right after his initial 15-day jail term was approaching its end.

"The court is not only persecuting the opponents of the authorities but also defending murderers," Gozman said after the court's decision was pronounced.

After Gozman was rearrested, his daughter Olga Gozman posted a statement from her father on Facebook.

"I do not regret a single word I wrote.... I do not regret anything. I am confident that this darkness will go away. Do not lose hope!" Gozman’s statement said.

Gozman has openly protested Russia's ongoing unprovoked invasion of Ukraine.

Gozman was a co-chairman of the now defunct Union of Right Forces political party, and a top manager of OAO Unified Energy System of Russia and the Rusnano Group.

After Russia launched its war against Ukraine in late February, Gozman left Russia but returned to Moscow in mid-June.

Gozman was previously investigated on a charge of not reporting his second citizenship. He holds both Russian and Israeli passports. Under Russian law citizens are required to report other citizenships immediately after obtaining them.