AKIPRESS.COM - Exxon Mobil Corp sued the U.S. government on Thursday, blasting as "unlawful" and "capricious" a $2 million fine levied against it for a three-year-old oil joint venture with Russia's Rosneft, Reuters reported.

The U.S. Treasury Department on Thursday morning slapped the world's largest publicly traded oil producer with the fine for "reckless disregard" of U.S. sanctions in dealings with Russia in 2014 when Secretary of State Rex Tillerson was Exxon's chief executive.

The lawsuit and the Treasury's unusually detailed statement on Exxon's conduct represented an extraordinary confrontation between a major American company and the U.S. government, made all the more striking because Exxon's former CEO is now in President Donald Trump's Cabinet.

Exxon took the government to court despite the fact that the fine, the maximum allowed, would have a minor impact on the company, which made $7.84 billion in profit last year.

The fine came after a U.S. review of deals Exxon signed with Rosneft, Russia's largest oil producer, weeks after Washington imposed sanctions on Moscow for annexing Ukraine's Crimea region.