Will the Putin-Zelensky summit take place? Attention focused on Istanbul

Ukraine and Russia have been at war for more than three years, and as peace talks are being held in Istanbul, Turkey on the 15th local time, a summit between the US, Ukraine and Russia is planned.
The previous day, Russian state news agency TASS reported that Presidential Spokesperson Dmitry Peskov announced at a regular briefing the composition of the delegation to attend the Istanbul talks.
In response to a question about this, he avoided giving a clear answer, saying only that "the Russian delegation will wait for the Ukrainian delegation in Istanbul on the 15th."
The talks in Istanbul began with Russian President Vladimir Putin's proposal on the 11th to hold talks in Turkey.
At a press conference immediately after the 72-hour Victory Day ceasefire that he unilaterally announced, President Putin said, "I have asked the Ukrainian authorities to resume talks in Istanbul, Turkey on the 15th."
Later, under pressure from US President Donald Trump to join, Ukrainian President Volodymyr Zelensky said, "Ukraine is not sure how the talks will go."
"I am ready to welcome you even if it is a formal ceremony," Zelensky said. "I am planning to go to Turkey on the 15th, and I expect President Putin to come as well. President Putin
"I would like to ask you not to give me any excuses for not attending this time," he said. Following this announcement, President Trump also hinted at the possibility of attending the Istanbul talks.
"The meeting between Russia and Ukraine on the 15th is very important and I believe it will produce good results," Trump said at a press conference on the 12th. "I considered flying there.
"I don't know where he is yet because he has so many meetings."