Never Crimea will not be recognized as Russian this is the first. And second, if Syria is in the sphere of influence of America, the fall in the price of oil and going oil and gas to Europe. It will be the end of Russian economy.
Crimea is already a part of Russia. There is no need for any recognition from anyone. And regarding Syria, it was never a pro-American country. Historically, the Ba'ath Party has favored Russia over the United States.