Small groups of Russian troops have pierced parts of Ukraine’s defenses in its eastern Donetsk region, according to local officials and monitoring groups, adding to Kyiv’s complications as Russia attempts to encircle the key strategic city of Pokrovsk.

Moscow's forces are making gains near Pokrovsk in Ukraine's Donetsk region, according to the Institute for the Study of War.

Friday's meeting will mark the first time Putin will be in the U.S. since 2015. Trump on Monday mistakenly said he was "going to Russia" as he discussed the summit, though he also praised the fact that Putin is coming to the U.S. rather than the other way around.