You'd like to know what laws are being broken when Russian invades another country? Really?
The referendum is fruit of the poison tree.
Crimea was part of the Russian SSR in 1954, given over to Ukraine.
Meaning Crimea is part of the sovereign nation of Ukraine, not Russia. Your idiotic implication would mean we can invade Panama any time we want and take it back.
Currently Russia has basing rights there, both army and navy. The majority of the population is Russian, or Russian sympathetic.
This is not Russia rolling over the Polish or Lithuanian borders, where Russia has no troop agreements, and no population willing to suffer Russian rule.
Completely irrelevant. We have basing rights in a lot of countries. "Basing rights" does not mean "we can invade your country whenever we please", no matter how much the people love us there.
One can say it is wrong, but if you say international law is being broken, you should be able to back that up with the law that is actually being broken.
That's not how it works. You have to prove it is legal for Russia to invade another country. That's how the rules work. For a country to be legally allowed to invade another country, the United Nations Security Council has to approve it.
So take Putin's dick out of your mouth and prove the invasion was legal, dipshit.