Thousands of soldiers' lives are at stake ahead of the meeting, according to Trump.
I will know within the first minutes if it is a good or bad meeting. If it is a bad meeting, it will end very quickly, if it is a good meeting, we will reach a peace in the near future.
On Wednesday, the American president opened up for a three-party meeting with his Russian and Ukrainian counterparts, after the first meeting with Putin.
The second meeting is the most important. Maybe we will have some European leaders with us, or maybe not, says Trump.
Earlier on Thursday, Trump said there is a 25 percent risk that the meeting between Putin and Trump will fail.
This second meeting will be very important because it will be a meeting where they can reach an agreement, said Trump.
Security guarantees
In a separate statement, US Secretary of State Marco Rubio says at the same time that security guarantees for Ukraine must be part of the peace talks.
I think we all realize that to achieve peace, we must talk about security guarantees, he says.
Earlier on Thursday, Politico also reported that Trump was said to be ready to contribute to some form of security guarantee to Ukraine if a ceasefire is reached with Russia, citing sources.
The discussion is said to have been raised at Wednesday's summit between the US and European leaders, which was held ahead of Friday's meeting between Trump and Putin.
Deter Russia
A European diplomat, a British official, and another person with insight into what was said during the meeting tell Politico that the US is ready to contribute to guarantees that will deter Russia from future aggression against Ukraine.
Trump has realized that some form of security guarantee from the US is necessary to reach a deal, according to the British source.
Trump, however, rules out that the defense alliance Nato will be involved and contribute to such a commitment, writes Politico, citing the source who was informed about the conversation. Trump is also said not to have specified what he means by security guarantees, but rather talked about the concept in broader terms.
