The Kremlin chief signed the agreement with Iranian President Masoud Pezeshkian in January.
Concerns grew following social media reports that pets were going missing - prompting locals to reportedly confront North Koreans about what they were allegedly doing to their dogs.
The war in Ukraine has been going on for three years and large number of prisoners have been taken on both sides.
Russian President Vladimir Putin declared a unilateral Easter ceasefire in Ukraine, ordering his forces to end hostilities on Saturday until the end of Sunday.
This comes after Donald Trump told reporters that he would walk away from negotiations if he thought either party was hindering the agreement.
A weekly selection of opinions and analyses from the Arab media around the world.
EUROPE AFFAIRS | "Russia only understands the language of force,” Maj.-Gen. Vadym Skibitsky told the 'Post.'
Putin told Al-Thani that it was important for Moscow to discuss the Israel-Hamas War and the future of Syria during the Qatari ruler's visit to Moscow.
Araghchi said he plans to discuss issues relating to nuclear talks between Iran and the United States during his visit to Moscow,
New details reveal how Assad smuggled millions in cash, data, and aides to the UAE as rebels closed in on Damascus.