Plenty of land in China for the “Palestinians”.
Another Idea, how about International peace keeper operations with boots on the ground, naval and air deterrence to protect the peace in the Republic of China, AKA Taiwan. (and maybe Tibet)
All China is doing is groundwork for its illegitimate claims)
Putin could offer the region in Siberia that Stalin set aside as a Jewish Autonomous Region to the Palestinians...but probably very few would take him up on the offer (just as few Jews went there in Soviet times).