Putin flew to Istanbul on Tuesday after a brief visit to Damascus where he met with his Syrian counterpart, Bashar Assad.
Peskov confirmed in the early hours of Wednesday that Putin plans to discuss with Erdogan the killing of Soleimani and its potential consequences.
Soleimani, who led the Iranian Revolutionary Guards’ elite Quds Force, was killed in Baghdad last Friday in a US drone strike ordered by US President Donald Trump.
Iranian President Hassan Rouhani and Supreme Leader Ali Khamenei have pledged that Soleimani’s death would not go unavenged, in response to what they consider to be a US crime.
Trump has tweeted that the United States would strike over 50 Iranian targets, including high-level and cultural sites, if Iran retaliates for Soleimani’s death.