(QHA) -

No country could voluntarily refuse energy cooperation with Russia, the country’s President Vladimir Putin has said amid speculation concerning the future of the South Stream gas project.

“The situation is always complex,”- Putin stated, adding that things are only calm when “humanitarian aid is being sent to Russia,” but as soon as Russia gets stronger then the situation becomes more complicated.

“We will always cooperate, and others will cooperate with us, even actively cooperate, I have no doubt about that,” Putin noted.

Putin’s comments come after Sunday's announcement that Bulgaria’s premier Plamen Oresharski ordered a halt to the Russian Gazprom-led South Stream gas project  until Bulgaria reaches agreement with the EU on it.

The South Stream pipeline was designed to carry Russian gas to the EU bypassing Ukraine.

Gas will be pumped to the Bulgaria’s Black Sea port of Varna before extending overland through Serbia, Hungary, and Slovenia to supply gas to the Western Europe via Italy and Austria.