Russia supplies a significant portion of NATURAL GAS to European countries making them energy dependent on Russia for heating and energy purposes. 

Russia's strategic control over pipelines like NORD STREAM allows Russia to influence gas flows and pricing across EUROPE.

Russia uses NATURAL GAS as a geopolitical bargaining tool to exert pressure on political decision in EUROPE countries.

RUSSIA gives out natural gas using competitive pricing and long term contracts, thus securing the European market share.

RUSSIA can halt gas deliveries at anytime during dispute and creates a huge crises in EUROPE.

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This is how RUSSIA controls the whole EUROPE using NATURAL GAS as a WEAPON !!!