The United States are working against strong European Union. That is why Americans created the Ukrainian problem in Europe – in order to complicate dialogue between Germany and Russia.
EU and US have long-standing relations that span over 60 years. Read more here.
US did not create a "Ukrainian problem" in Europe.
The Office of the Prosecutor of the International Criminal Court has stated that "the information available suggests that the situation within the territory of Crimea and Sevastopol amounts to an international armed conflict between Ukraine and the Russian Federation". This international armed conflict began at the latest on 26 February when the Russian Federation deployed members of its armed forces to gain control over parts of the Ukrainian territory without the consent of the Ukrainian government.
The European Union stated in July 2014 that "arms and fighters continue flowing into Ukraine from the Russian Federation".
According to the US Defense Intelligence Agency (DIA), Russian special forces and troops operated to mobilize, lead, equip, and support separatist militias in the Donbass region in Eastern Ukraine from spring 2014 to the present, although their presence was denied by Moscow.
Russian President Vladimir Putin admitted Russia's military presence in Ukraine in 2015.