I doubt that this will piss Putin off as much as some may think.
Putin (may god bless his grand pecks) knows how Trump ‘negotiates’, that is Trump says a lot of nonsense and you have to treat Trump as if he is writing up the best damn deal for America of all time even if it is a load of nothing (like USMCA which is renamed NAFTA or the US-Ukraine Mineral Deal which would have given Ukraine tons of investment in return for mostly fuck all). You have to treat the little orange self proclaimed god-emperor as if he really is one.
Trump hates Iran because Iran embarrassed him.
Trump hates Zelenskyy because Zelenskyy shat on him and attempted to embarrass Trump.
What land issues? The Kurils which they rightfully won in 1945? They already control them all, it is Japan that has issues with it.