Questions about whether Kyiv is surrounded are raging as well
Lots of moving parts when it comes to war. What exactly is being discussed between the leaders is not yet known. They could be negotiating a ceasefire, negotiating the separatists areas, or just biding time and playing games.
Putin seems to be placing more resources in and around Kharkiv which observers believe is a pretense to isolating the the eastern portion of Ukraine and adding Ukraine's second largest city into a larger section of land that would include the separatists area already pretty much Russian occupied. With Crimea and the two separatist areas, much of that area is now under Russian control already. Perhaps there is a deal to be made with Putin backing off Kyiv and Ukraine as a whole, and Zelenskyy giving up some of that eastern region as a "new" country that would obviously be under Putin's thumb.
Meanwhile, the press secretary in Kyiv told the world that their city was basically surrounded and that nobody was getting out or in. This was heavily disputed almost immediately and some were literally calling the press secretary out as a "liar". Of course piecing together a variety of sources and what some are claiming satellite imaging is showing, there are Russian troops that advanced "around" Kyiv and may be setting up blockades on as many roadways as they could. I suspect that the press secretary probably told a damaging truth because he didn't know any better. Either way, Russians are expected to have that city encircled or surrounded in the coming days, especially if Belarus enters the fray.
The Belarus involvement would be hard on Ukraine. First, from a psychological standpoint, it would suck to have other former Soviet soldiers invading your territory. It's one thing to fight the Russians. It's another to have a neighbor take the other side. Second, Belarus is no more than 150 miles from Kyiv and at the very least provides more pressure from the north and north west. Belarus is said to only have about 50,000 in their armed forces, but they do have some very well trained combat units.
At this point, the undermatched Ukrainians are still standing. They may look like Rocky at the end of the first Rocky movie, but they appear to have the same sort of heart and drive to go the distance. Whether they can keep up the resistance as food, medicine, and supplies start to dwindle is anyone's guess. But who wants to bet against them at this point?