The threats, pressure and ultimatums have come and gone, but Russian President Vladimir Putin has maintained Moscow’s uncompromising demands in Ukraine, raising fears he could use a planned summit with U.

Kyiv and Moscow have held three rounds of talks in Istanbul this year that yielded exchanges of prisoners and bodies.

Turkish Foreign Minister Hakan Fidan has stated that during talks between Russia and Ukraine in Istanbul, "a fundamental agreement was reached on holding a summit of leaders in Türkiye". Source: Fidan,