The Russian government boarded and seized a ship on the high seas. This is an act of piracy that cannot be ignored. Russia seems to think they own the arctic seas and can do as they like with no one to stop them.
The Russian government has declared the crew to be pirates and terrorists, but who actually seized whom. They did it because they don't want anyone to interfere with their drilling for oil in international waters. Stop this blatant act of piracy by Putin who owns much of the oil companies of Russia and is simply protecting his interests.