Russia deploys S-400 surface-to-air missile battery in Crimea, seen in new satellite images

Catherine the Great took Crimea from the Turks. Russia has national interest to keep their ports and access to the Black Sea.
I do not know what happened that caused Russia to block and fire on the Ukranian ships. What I wonder about is not Russia's back yard. It is our back yard full of illegal aliens bringing in diseases, drugs and crime.
Perhpas, we should take over our souther border that shows our national interest are at stake. Like culture for example and our childrens future. Rather than being impressed with what Russia is doing on their southern border with a country that half the population see themselves as Russian.
Who, or what groups paid for the poor uneducated illegal aliens to march and try to invade these United States? Let's shoot them at dawn right after a fair trial for making war with us. I mean, let's write them a strongly worded letter to not make war with these United States anymore.

Well they way they sneak around and try to keep everyone away from places they have been or claim for themselves I can't say i'm surprised. Much of what they are doing appears it may well be part of a bigger plan. It nothing new for Russia and brings to mind missile staging in Cuba back in the 1960s except this time on someone else's doorstep. Better relations with Russia are fine but I wouldn't turn My back on them either.