Can't say I can speak for Ukraine and Taiwan as you do but I would imagine Taiwan wouldn't want a status qou with missiles striking Taipei on an almost daily basis.
Was stuck on level 7 and came back to the thread to read the comments. Can't belive your first prompt actually printed the answer in a such easy manner.
In regarding the Mammoth there is some who claims that bringing the Mammoth back would help recreate the northern subarctic steppe grassland ecosystem that flourished in Siberia during the last glacial period. This would increase the animal density in Siberia and so on.
Since parts of Northern Europe still experiences Post-glacial rebound and will rise faster than the expected rise of the ocean level I find this project unnecessary. (I am still a sucker for megaprojects though)