I should not have to provide evidence of the oil theft.
It is famous and ongoing.
Here is just a 2012 world court ruling against the Ukraine.
en.wikipedia.org
{...
On 8 June 2010, a Stockholm court of arbitration ruled
Naftohaz of Ukraine must return 12.1 billion cubic metres (430 billion cubic feet) of gas to
RosUkrEnergo, a
Swiss-based company in which Gazprom controls a 50% stake. Russia accused Ukrainian side of diverting gas from pipelines passing through Ukraine in 2009.
[11][12] Several high-ranking Ukrainian officials stated the return "would not be quick".
...}