Amid pressure to reveal more about Russian use of Facebook Inc.’s platform to potentially interfere with the 2016 U.S. presidential election, the social media giant’s general counsel, Colin Stretch, revealed plans Thursday to turn over Russian-related ads to Congress.

“This has been a difficult decision,” Stretch wrote in his Sept. 21 post on the company’s website. “Disclosing content is not something we do lightly under any circumstances,” he continued, adding, however, that the company believes “the public deserves a full accounting of what happened in the 2016 election, and we’ve concluded that sharing the ads we’ve discovered, in a manner that is consistent with our obligations to protect user information, can help.”