Wolf Blitzer delivers the most important breaking news and political, international, and national security stories of the day. Tune to The Situation Room weekdays 5-7pm ET on CNN.
CNN's Isha Sesay has the latest developments in the kidnapping of more than 200 school girls in Nigeria, including new assistance offered by the United States.
In an essay in Vanity Fair magazine, Monica Lewinsky breaks her silence about her affair with President Bill Clinton that rocked the country. CNN's Tom Foreman reports.
Scorching heat and stronger hurricanes, floods and fires, torrential downpours and droughts: The White House is warning in a brand new report that the effects of climate change are here and only getting worse. CNN's Brian Todd investigates the report.
President Obama speaks out about Boko Haram, the Islamist extremist organization claiming responsibility for kidnapping more than 270 schoolgirls in Nigeria and threatening to sell them.
Government forces in Ukraine step up to rally against pro-Russian forces, leading to at least 30 dead militants and fresh warnings of an all-out civil war. CNN's Jim Sciutto reports.
CNN's Barbara Starr looks at rising extremist groups, especially al Qaeda affiliates and Nigeria-based Boko Haram, that are taking over regions of Africa.