The president said he's optimistic about Thursday's expected talks between Vladimir Putin and Volodymyr Zelensky in Istanbul.

The Ukrainian leader’s move appears to designed to ramp up pressure on Vladimir Putin.

Ukrainian President Volodymyr Zelensky said Sunday he will travel to Turkey later this week to meet Russian President Vladimir Putin to discuss a "necessary basis for diplomacy" to end the war. Why it matters: If the meeting takes place,