The tensions betewen Rusia and Ukraine are High as we now it and militarly Nato it's not interveing  because  Europeian  countries with USA choose the best possible way to try to attack economically.Ruble it's on it's lowest since 2006 and since then it has only fallen, also the sancsions are making it difficult for Russia to act but it has been acting despite these actions.Strongest Weapon the Russia has it's  the oil and the gas that export's it to Europe with the oil prices making it to jump up and be a real problem for the whole Europe ,But who is gonna last more with this economic war it's about to be seen .