Homeland Security says terrorists haven't crossed U.S-Mexico border
Two Republican congressmen said in recent days that men with ties to terror groups had illegally entered the U.S. before being apprehended
The Fight Against ISIS
Hillary Clinton: ISIS more powerful than al Qaeda ever was
The former secretary of state called the group "a serious threat"
To fight ISIS, are U.S. ground troops needed?
In a new CBS News poll, Americans weigh in on their support for sending U.S. troops and whether U.S. troops will be needed to battle ISIS
Colin Powell: Iraqi Army will have to take back territory from ISIS
Former secretary of state says that the U.S. can supply air power, but it will be up to the Iraqis to fight ISIS on the ground
U.S. claims airstrikes drive ISIS back in Kobani
Pentagon spokesman warns that despite damage done to militants, the strategic Syrian town near Turkey's border may fall
U.S. powerless to stop ISIS taking Syria town?
Despite new U.S.-led airstrikes and pleas from humanitarian groups, extremists seem poised to capture Kobani, on Turkey's border
Republican candidate removes beheading footage from campaign ad
Wendy Rogers received heavy criticism for showing a journalist's beheading to paint Rep. Kyrsten Sinema as weak on national security
Americans not happy with Obama's handling of ISIS
A new CBS News poll also reveals Americans' thoughts on which party has the edge on the terrorism issue
FBI asks public for help identifying ISIS militant
Federal investigators reaching out in hope someone recognizes masked man through his voice or appearance
Canada's parliament authorizes airstrikes in Iraq
The U.S. had requested its northern neighbor consider joining the fight against ISIS; authorization rules out ground troops
A Western jihadist says why he fights in Syria
CBS News' Clarissa Ward meets a former Dutch soldier who left everything behind to fight against the Assad regime in Syria
FBI to public: Help us identify foreign fighters
U.S. wants to ID man with North American accent apparently overseeing prisoners digging their own graves in ISIS propaganda video
Biden apologizes to Saudi Arabia for ISIS comments
It's the third country the vice president has had to reach out to following his controversial remarks
Official: U.S. won't shift campaign to save Syria town besieged by ISIS
"Kobani is horrible but right now there's a lot of horrible in Iraq and Syria," Pentagon official tells CBS News
Chicago-area teen accused of trying to join ISIS
Mohammed Hamzah Khan was arrested at O'Hare Airport, allegedly trying to make his way to the Mideast to fight for extremists
Dozens killed as ISIS, Kurds clash in Kobani
Battles reach fever pitch as local Kurdish fighters struggle to defend northern Syrian town; Hezbollah and al Qaeda affiliate also in intense fight near Lebanon
ISIS luring teenage jihadi brides
Some young Muslims in Europe feel out of sync with society, and with extremists reaching out from Syria and Iraq, more young women are hearing the call
The Muslim nation where ISIS is free to recruit
Gov't in southeast Asian nation has spoken out against extremist group, but police say they can't stop flow of jihadists to Syria
FBI director on threat of ISIS, cybercrime
In his major first television interview, FBI Director James Comey speaks with Scott Pelley about the current threats to the U.S.
ISIS militants attack Syrian town near Turkey border
As the Syrian Kurdish town of Kobani came under attack, some artillery rounds were fired into Turkey
Republicans still calling for U.S. ground troops to fight ISIS
President Obama has been adamantly opposed to deploying American combat troops in the fight against militants in Iraq and Syria
Despite coalition airstrikes, ISIS continues push against Syrian Kurds
Battle for Syrian town on Turkish border rages, as Hezbollah picks up fight against Sunni extremists near Lebanon
Netanyahu: ISIS, Hamas, Iran all want to be "king of the hill"
As Israeli PM backs U.S. action against extremists in Iraq and Syria, the question of American troops on the ground is raised again
Former Army ranger shown in ISIS video had set up relief organization
American threatened as next victim of militant group was doing relief work in Syria when he went missing last year
Video purports to show ISIS beheading British hostage
The video ends with an ISIS fighter threatening a man they identified as an American
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Pope Leo's lung nodule surgery completed successfully, Vatican says
