Washington (QHA) - U.S. President Barack Obama is planning to attend the upcoming G20 summit in St. Petersburg, Russia, White House Spokesperson Jay Carney said on Monday, August 5, informs Itar-Tass. According to him, the United States was still studying the value of the summit and had a number of questions concerning Russia. The spokesperson stressed that the two countries disagree not only over former National Security Agency leaker Edward Snowden but also over other issues, including Syria. U.S. Department of State Deputy Spokesperson Marie Harf confirmed that there are areas where the two countries work together. “We’ll continue to do so because it’s in our interest to do so. There are areas where we disagree, as we’ve talked about, not just Snowden but others. And again, we’re evaluating our summit, the 2+2. We’re looking at that right now. So clearly this could have an impact, but the relationship is a broad one where we have many national security interests as well,” she said. Obama is scheduled to come to Moscow in early September to meet with President Vladimir Putin ahead of the G20 summit in St. Petersburg. However mass media reports quoted a source in the U.S. Department of State as saying that Obama might cancel the visit if Snowden would still be in Russia by that time.