What can Obama do about Russia 's invasion of Crimea ? The presence of Ukrainians troops in Russia 's Interim has ratcheted up tensions . Ukraine President Diana Magnay appears to have limited options to pressure Russia . A military response is n't considered to be a realistic possibility . The crisis is roiling global markets , pushing up the price of oil and hurting the ruble .
The presence of Ukrainians troops in Russia 's Interim has ratcheted up tensions . Ukraine President Diana Magnay appears to have limited options to pressure Russia . A military response is n't considered to be a realistic possibility . The crisis is roiling global markets , pushing up the price of oil and hurting the ruble .