The debate took place in Florida, which will deliver the biggest delegate prize when several important states vote next Tuesday.
Tunisian troops recovered weapons and arrested at least 10 other people during several raids in Ben Guerdan on the Libyan border.
Tunisian security forces are dealing with the second militant attack in a week on the country's border with Libya.
The former secretary of state said not acting in Libya would have created a much more dangerous situation.
The Islamic State group has stepped up its attacks on civilian targets as it loses ground in Iraq and Syria.
“Over half of the Republican electorate feel ‘betrayed’ by their party. That is a big number and a strong word,” Carly Fiorina says at the Conservative Political Action Conference.
The debate came just two days after a definitive Super Tuesday victory for real estate mogul Donald Trump.
The country has been ravaged by years of war, but a high-level UN official has said foreign interference will only exacerbate a humanitarian crisis.
Although the last batch of former Secretary of State Hillary Clinton’s emails were released by the State Department Monday, the controversy is not over.
Two blasts rocked a market on Sunday in the northeast suburb of Sadr City, killing at least 70 and wounding more than 100.
While no group claimed responsibility for the attack, both the United States and Libyan government forces have launched airstrikes on jihadi targets in recent months.
The damning U.N. report details horrific findings of unlawful killings, torture and other human rights abuses committed by all sides in war-torn Libya.
The militants are thought to be the first members of the Islamic State group to have renounced it and joined the reconciliation process.
Italy has allowed combat American drones to fly out of the Sigonella air base in Sicily for defensive operations against the Islamic State group in Libya and North Africa.
French newspaper Le Monde reported that President François Hollande had authorized “unofficial military action” in the conflict-ridden North African state.
The incident comes just days after American forces carried out their first airstrikes of the year on one of the militant group’s bases in the city of Sabratha.
Islamic State group militants, thought to number up to 3,000 in Afghanistan, have sought to carve out a stronghold in the conflict-ravaged country.
Greece witnessed the arrival of an estimated 42,861 refugees in February alone, according to a report by the International Organization for Migration.
Italian officials have been apprehensive about allowing American drones to carry out offensives from its Sicilian base, fearing potential blame for civilian casualties.
As the U.S. expands its fight against the Islamic State group in the Middle East, suspects in several U.S. states face prosecution.
Five years after Moammar Gadhafi was toppled, Libya is plagued by instability, and Islamic militants have taken advantage of a security vacuum.
Serbian authorities had been negotiating the release of its two embassy staff members abducted in Libya in November prior to the U.S. airstrikes on a suspected ISIS training camp.