US President Barack Obama has confronted Russia over its granting of asylum to fugitive intelligence leaker Edward Snowden and its anti-gay measures, saying Moscow occasionally displays a “Cold War mentality.”

During an appearance on a late-night comedy show Tuesday, Obama said Moscow was still being helpful in Afghanistan and on counter-terrorism but spoke of “underlying challenges that we have had with Russia lately.”

Obama insisted he would attend next month’s G20 summit in St. Petersburg, but did not say whether he would meet with Putin for one-on-one talks.

Obama said he was “disappointed” by Russia’s decision to award one year’s temporary asylum to Edward Snowden, the former IT contractor who leaked details of vast US surveillance programs to the media.

Snowden was recently allowed to relocate to a secret safe house after being marooned in Moscow’s airport for five weeks.

Washington had revoked his passport and demanded he be sent back to face charges of espionage over the leaks, which detailed the US National Security Agency’s gathering of vast amounts of phone call logs and Internet data.

Obama also lashed out at Russia over a recent law criminalizing the dissemination of information about homosexuality to minors, which critics fear could legitimize widespread discrimination.

The Russian measure, signed into law by Putin, introduces fines of up to 5,000 rubles ($156) for citizens who disseminate information about homosexuality to minors, but critics fear it could legitimize homophobia.

The bill has sparked controversy ahead of the 2014 Olympic Games in Sochi and raised concerns that visiting gay athletes and spectators could face discrimination or even legal action.

Obama downplayed such fears, saying it was in the best interests of Putin and Russia to “make sure the Olympics work.”

The White House has said it is assessing the “utility” of a planned summit between Obama and Putin scheduled for early September.

The foreign and defense ministers of the two global powers will meet on Friday in Washington, when they are expected to discuss Syria, Afghanistan and Iran.

Washington and Moscow have been at loggerheads over Syria, with Russia backing President Bashar al-Assad’s regime and the United States providing aid to the rebels struggling to topple him.