Personal insult means lack of arguments :-)
BTW, there is the city of Sebastopol, the main Soviet and then Russia navy base in that area. It was not part of the Khruschev's gift to his Ukrainian commy lads in 1954 and remained the city of so called "central sub-ordination" ("reported" directly to Moscow). After 1991, according to the agreement between Russia and Ukraine the Russian fleet remained there and also totally 20K of the Russian military personnel was allowed to stay there in Crimea (in reality there were 18K).
Thus, there was no need to "invade".
As for the Ukrainian military forces in Crimea, there were also about 20K in total. After the referendum in 2014 (where 97% voted to leave Ukraine, turnout of voters was some 83%) about 6K+ of them were happy to join Russian forces, the same amount simply said "farewell to arms" and remaining 6K+ preferred to relocate to the continental part of Ukraine.
Thus, there was no need to invade or annex. Simply, absolute majority of the population gladly changed the citizenship.
As correctly mentioned above by Racedo, if anybody is OK with Northern Ireland as part of the UK, then Crimea integration with Russia is much more justifiable. No shooting, no blood, no IRA, etc.
As for the title of the thread, Russia is indeed strengthening its forces there, but not significantly. Adding one more battery of S-400 (to 3 already deployed) is not a big deal.
Better pay attention to Ukraine seriously concentrating their forces in the S-E Ukraine. Pres. Poroshenko arranged a provocation near the Crimean bridge to impose the martial law and extend his time in the pres, chair (elections are scheduled for March '19). But his internal rivals did not allow him to extend it for more than 30 days, thus a new, larger, provocation is needed before these 30 days expire. The most probable scenario is to start a serious offensive in the Donbass area controlled by separatists and blame Russia (as usual). We will see soon....
Last edited by A_Van; 11th Dec 2018 at 15:46.