Despite a few assertions lacking substance, the article still brings to the table interesting insights about pipeline maintenance. Since we are at making guesse

Despite a few assertions lacking substance, the article still brings to the table interesting insights about pipeline maintenance. Since we are at making guesses, here is mine. A real accident on NS1, which was indeed under maintenance. After a few hours of discussions, russians decide to sabotage NS2 it order to make the event look like an act of war.