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Although tensions between President Obama and Russian President Vladimir Putin have thawed over the years, there is one world leader who still has a working relationship with Putin: Angela Merkel. Could this pastor's daughter from Soviet East Germany be key to a diplomatic solution? CNN's Brian Todd reports.
Less than a year after Putin's New York Times op-ed condemning the use of force in Syria without UN consent, Russia has troops on the ground in Ukraine. CNN's Brian Todd reports many are now calling the Russian leader a hypocrite.
CNN's Brian Todd examines Russian President Vladimir Putin and what is behind his aggression in Ukraine - from restoring the Russian empire to extreme paranoia.
CNN's Brian Todd talks to experts who say the crisis in Ukraine - and Vladimir Putin's perceived role in it - have tarnished Russia's moment in the spotlight.
CNN's Brian Todd reports on al Qaeda's master bombmaker, who could be connected to the latest potential airline threat: shoe bombs.
Last October, a massive cyber attack hit the American military's websites, and some think Iran was behind it. CNN's Brian Todd reports on the threat of all-out cyber war between the U.S. and Iran.
Droughts in California, snowstorms on the East Coast, floods in the UK's. CNN's Brian Todd looks at the science that connects the extreme weather patterns across the globe.
In new video, Kenneth Bae, the American detained in North Korea, is interviewed back at a prison camp after his hospitalization. CNN's Brian Todd reports.
CNN's Brian Todd has an exclusive look at how much damage toothpaste tube bombs - a potential threat at the Sochi Winter Olympics - can leave behind.