The current crisis is not about Crimea. It is about the rights of Russian-speakers throughout Ukraine whom the Kremlin wants to protect from violence and discrimination. Russia does not want a military intervention in Crimea and does not want to take Crimea from Ukraine.
There is a political solution to this crisis. First, create a coalition government in Kiev composed of all parties, including those from the east and south of the country. The current government is dominated by anti-Russian extremists from western Ukraine.
Will there be war in Ukraine? I am afraid so. After all, the extremists who seized power in Kiev want to see a bloodbath. Only fear for their own lives might stop them from inciting such a conflict. Russia is prepared to move its forces into southern and eastern Ukraine if repressive measures are used against the Russian-speaking population or if a military intervention occurs.