0bama has been weak with China and every other nation from day one. Foreign leaders laugh at the guy... he has to pay countries to like him,
Russia is terrified of Obama and Hillary. When Russia moved troops into the Crimea, (part of Ukraine, which is not a NATO country but a breakaway nation from Russia), Russia tried to bluff it through but Obama got together with the EU and slappeeconomic sanctions on Russia that slowed the Russian economy considerably. Then Obama got together with Saudi Arabia and got the Saudis to continue oil production, which combined with American oil production drove the price of oil way down.
Russia's major product is oil. Between Obama's work with the Saudis and his agreement with the EU, the Russian economy took a giant fall downward, and Ruissia remains in a Depression to this day. This is a chart of the Russian ruble vs the US Dollar-the ruble caved under the pressure Obama brought against Russia, which Putin completely miscalculated.
This is why Putin hatched the plot to hack DNC servers to put his compliant candidate, Trump, into office so he will let Russia take over Ukraine. Also, Trump will get down on bended knee and disperse with NATO, so Russia will get its Eastern European Empire back. Trump is the Manchurian candidate, and Putin is his puppetmaster.