Kremlin critic Alexei Navalny says he has bought a plane ticket and will return to Russia on 17 January, months after he was poisoned in Siberia and sent to Germany for treatment.
"Russia is my country, Moscow is my city and I miss it," he said.
The Russian opposition figure collapsed on an internal flight last August and it later emerged he had been poisoned with a Novichok nerve agent.
Investigative journalists say Russian intelligence carried out the attack.
Russian authorities have consistently denied any role in the poisoning, and the Kremlin has rejected Mr Navalny's claims that President Vladimir Putin himself ordered it.
Why is Navalny returning to Russia?
"There was never any question of 'returning or not' for me. Simply because I didn't leave. I wound up in Germany, having arrived in a resuscitation box, for one reason: they tried to kill me. I survived," Mr Navalny wrote on Instagram.
He faces an uncertain future when he does return, as Russian authorities have already warned he could face imprisonment.
Last month the prison service gave him an ultimatum to report at an office in Moscow or go to jail for violating conditions from an earlier conviction for embezzlement. This week the federal penal service (FSIN) filed a motion with a district court. Mr Navalny said the FSIN wanted a suspended sentence replaced with a prison term - he has always condemned the embezzlement case as politically motivated.
Has Navalny recovered?
He has spent months recuperating in Germany since the poisoning and appealed to supporters to meet him off the flight on Sunday in Moscow.
In August, he had collapsed on a plane flying home from Tomsk in Siberia to Moscow and the pilot diverted the flight to the city of Omsk, from where he was eventually allowed to fly on to Germany in an induced coma.
He was released from hospital in Berlin in September to continue his recuperation and said on Wednesday he was able to do the push-ups and squat exercises, and therefore had probably almost fully recovered.
Last month, investigative reporters named three FSB agents who had travelled to Tomsk at the time Mr Navalny was there, and said the specialist unit had tailed him for years. You can read interesting news here. : slotxo