As ISIS seems poised to draw U.S. into Syria's messy civil war, the delicate balance between rebel factions could be facing an upset
As Scots decide whether to break away from Britain, another call for a referendum is gaining steam 1,000 miles to the south
Secretary of Homeland Security Jeh Johnson tells CBS News that even with all the focus on ISIS, other bad actors may prove harder to detect
What -- and whom -- is bankrolling the biggest terrorism threat to the United States right now, and why it's hard to stop the cash flow
Major military drill is 2nd announcement by Putin in 24 hours in clear response to NATO's bolstering of defenses over Ukraine
Former Paralympic track star listens stoically as judge reads verdict in murder trial for killing of Reeva Steenkamp
Mayor of Toronto had been suffering from stomach pains for at least three months, hospital says
Man says extremists told 100 villagers they were being taken to a refugee camp - but it turned out to be a trip to a mass grave
Al Qaeda is on its heels, but a number of emerging groups are poised to pick up the torch and carry on the group's terrorist mission
CBS News Homeland Security Correspondent Bob Orr talks with CBS News Senior National Security Analyst Juan Zarate about the threat posed by terror groups 13 years after 9/11, and whether the danger we face now is greater than it was then.
The Islamist militant group ISIS has taken control of sections of Iraq and Syria and prompted U.S. intervention
Canadian Prime Minister Stephen Harper announced that one of two British explorer ships that disappeared in the Arctic nearly 170 years ago has been found. Harper says "this is truly a historic moment for Canada."
Fighting between rebels and Bashar al-Assad (and each other) has continued since the Arab Spring uprising of 2011
Is Olympian Oscar Pistorius guilty of murder or innocent? A judge decides and a former girlfriend speaks out.
A Pentagon source tells CBS News its bombing campaign will not just support Iraqi forces, but will also seek to "degrade" ISIS capabilities
Ground-penetrating radar and other techniques turn up ancient clues beneath the mysterious landmark
Austin Tice, a freelance journalist and former U.S. Marine was kidnapped in August, 2012 while reporting in Syria. His family has repeatedly appealed for his release in the two years since
Secretary of State John Kerry visits Iraq and meets with leaders ahead of President Obama's address on fighting ISIS
Without placing blame on who was using it, watchdog group says chlorine was likely used in attacks on villages in northern Syria
Moscow's weapons modernization program for the next decade must provide a "guaranteed nuclear deterrent," Russian president says