Western officials hope that informal contacts between Putin and Poroshenko during the event can help ease tensions over Ukraine's future.
Hollande will meet Obama in a restaurant overlooking the iconic Champs-Elysees before going back to his residence for a supper with Putin.
Despite a slew of major international issues, global markets are remaining relatively steady, says Ron Insana.
Vladimir Putin's disruptive moves in Ukraine are aimed at keeping his grip on power in Moscow, said hedge fund boss William Browder, in reaction to CNBC's interview with the Russian leader.
John Herbst, former U.S. Ambassador to Ukraine, shares his thoughts on the Ukrainian elections and whether President-elect Petro Poroshenko is able to handle the turmoil in the East.
Russian President, Vladimir Putin, gave CNBC a "very open opportunity" to quiz him with "absolutely no restrictions" says CNBC's Geoff Cutmore. Would other world leaders have done the same?
Dr. Stephen Blank, American Foreign Policy Council, discusses how sanctions on Russia will negatively impact the economy and devalue the ruble. CNBC contributor Ylan Mui provides perspective.
Discussing Russian President Vladimir Putin's comments on the pressure from the U.S., with Don Jensen, Johns Hopkins University, and CNBC's Steve Liesman.
CNBC's Steve Liesman and John Harwood remark on what Russian President Vladimir Putin said in St. Petersburg, about President Obama's involvement in the crisis.
A look back on Russian President Vladimir Putin's comments in an interview with CNBC's Geoff Cutmore in St. Petersburg, about Ukraine, and President Obama's involvement in the crisis.
Russia has prepared a secret document detailing actions if Western nations impose further sanctions over Moscow's involvement in Ukraine.
CNBC's Geoff Cutmore discusses his interview with Russian President Vladimir Putin at the International Economic Forum where Putin told President Obama not to judge people. Putin also stated he is very unhappy with the sanctions imposed.
CNBC's Steve Sedgwick discusses Vladimir Putin's interview at the International Economic Forum where the Russian president addressed the election and constitutional change in Ukraine.
Russian President Vladimir Putin talks to CNBC's Geoff Cutmore about Ukraine, natural gas, U.S. sanctions and President Obama.
The "Squawk on the Street" crew remark on Russian President Vladimir Putin's comments at an investment forum in St. Petersburg this morning.
Russian President Vladimir Putin has outlined his plans for a new Eurasian union, as he slammed Western powers over sanctions.
Ben White, CNBC contributor, shares his thoughts on former Treasury Secretary Tim Geithner's actions during the financial crisis, and whether he was on the side of Wall Street or Main Street.
Russian president Vladimir Putin calls CNBC's Geoff Cutmore "scary", adding that he has created a "businesslike" atmosphere for the panel discussion.
Russian president Vladimir Putin says the country will not ban social media websites like Facebook and Twitter in Russia.
CNBC's Steve Liesman weighs in on Russian President Putin's comments at the International Economic Forum.