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Global Affairs Editor John Lyons says Volodymyr Zelenskyy would be feeling "anxious" following the phone call between Donald Trump and Vladimir Putin to end the war in Ukraine.
The US Defense Secretary Peter Hegseth ruled out Ukrainian membership of NATO, while Donald Trump says continued US investment in Ukraine could be made in exchange for a piece of the country's rare earth metal industry.
A US-based analyst is sceptical that any significant breakthroughs will happen ahead of an important meeting in Munich, Germany on Friday.
A White House delegation led by JD Vance is due to meet Volodymyr Zelenskyy to discuss the war.
Dmitri Alperovitch runs a geopolitical think tank in Washington DC and is a member of the Homeland Security Advisory Council.
He told ABC NewsRadio there were two issues preventing a just peace between Ukraine and Russia.
"One is that no-one is really willing to commit combat troops to deter Russia from invading Ukraine yet again," he said.
"Secondly, it's not clear to me why Vladimir Putin would accept any sort of NATO involvement ... when he used that as one of the casus bellis for start starting the war in the first place."
For those just joining us, here's a quick rundown of what was said to have been discussed in the call between Donald Trump and Vladimir Putin — the first known contact between a US president and Russian counterpart in more than two years.
The war in Ukraine dominated the 90-minute talks. Mr Trump said the leaders agreed negotiations to end the war would begin "immediately", without giving details on what shape those negotiations would take.
Moscow released its own version of how the phone call went down.
Ukrainian President Volodymyr Zelenskyy spoke with Mr Trump and expressed confidence in "America's strength" to restore peace in his nation.
Mr Trump told White House reporters he intends to, "probably", have three in-person meetings with Mr Putin, with the first to be held in Saudi Arabia.
He said he thinks "some" of Ukraine's land will come back under a peace agreement, but that it was "not practical" for Kyiv to be made a NATO member.
US aid to Ukraine will not be stopped for the time being but that could likely be part of enabling Washington's plan to secure future access to the country's rare earths and minerals.
Aside from Ukraine, Mr Trump and Mr Putin also discussed the Middle East, energy, Iran's nuclear program and AI.
Retired US diplomat John E. Herbst says Russia will have to make concessions for any chance of peace with Ukraine.
Mr Herbst was ambassador to Ukraine under president George W. Bush from 2003 until 2006.
He told Radio National Breakfast that a one-sided deal with no concessions from Russia would be a disaster.
"It could lead to Ukraine being conquered by Russia and a huge geopolitical defeat which would be tagged directly on the Trump administration," he said.
"So, I don't think that Trump has given up seeking Putin to accept terms along the lines that he's laid out."
The phone call between Donald Trump and Vladimir Putin has been big news in Russia, where the media is state-controlled.
There was a great nugget I found in an article by Kommersant, which is one of the largest news outlets in the country.
It's pointing out there are some differences between Mr Trump's version of the phone call and details later provided by the Kremlin press secretary Dimitry Peskov.
Mr Trump said, in a post on his Truth Social platform that one of the things he and Mr Putin discussed was the "strength of the dollar".
One can only imagine with what enthusiasm Vladimir Putin supported the conversation about the strength of the dollar.
Later, it points out Mr Peskov's statement did not mention any chat about the strength of the US dollar. The Kommersant article asks:
Now think about it: did it happen?
It also provides a nice little anecdote from Mr Peskov's press conference, which was held via phone and didn't last long.
The conference call was over and took three minutes of airtime.
The cry from the heart of one of the correspondents: "Can I ask a question, Dmitry?!" was cut short by a succinct answer: "No, you can't."
Someone called Shaun has asked a question, and it's one I'd been meaning to clarify:
In the Trump post on his Truth Social platform he mentions millions of deaths in the Ukrainian war. Is this correct?
Shaun, he's unlikely to be correct. Neither Russia nor Ukraine make the number of casualties they've sustained public.
It's pretty safe to assume the US would at least have access to Ukraine's.
But the best estimates put them in the hundreds of thousands, not millions. It's still a lot, obviously.
Another member of Ukraine's parliament, Oleksiy Goncharenko, has voiced his optimism that Donald Trump will help broker peace between Russia and Ukraine.
Mr Goncharenko told ABC NewsRadio that he hopes it will be a lasting peace, and not just a ceasefire.
"What I like is that this first conversation between Trump and Putin means that now Trump is responsible for how it will continue," he said.
"Donald Trump has enough leverage to make Putin make concessions and to be reasonable.
"We all know that he likes to win, that he hates to lose, so I think he now wants and will show us how he will win over Putin."