Reporter James Harkin traveled through war-torn Syria to witness how many historical treasures were destroyed - and how some people are scrambling to save what's left.
The truce, which falls short of a cease-fire, appears to have been observed by most parties. But the Islamic State, not included in the agreement, launched a new attack in northern Syria.
Recent fighting in northern Syria has been pushing more and more civilians to seek shelter elsewhere. But neighboring Turkey, already burdened with 2.6 million refugees, has locked down its border.
But it's unclear whether the various sides agree to all the terms. Many rebels are skeptical that the truce will have any effect on Syria's raging 5-year-old war.
In an interview with NPR's Mary Louise Kelly, CIA Director John Brennan discusses the FBI/Apple dispute over over the San Bernardino shooter's iPhone, the state of ISIS and al-Qaida and interrogation.
Despite its potential landmark status, the "cessation of hostilities" agreement is being met with skepticism, in part because it doesn't include two powerful jihadist groups.
Bashar Assad claims more than 80 countries are supporting extremists in his country. He says he would welcome a pause in the fighting, but would still attack groups like ISIS.
At least four explosions hit a suburb of Damascus, and earlier in the day, two car bombs struck Homs. The attacks come on the same day negotiators reported progress in Syrian cease-fire talks.
The "cessation of hostilities" was supposed to take hold Friday but doesn't appear imminent as consultations continue. But badly needed humanitarian aid has arrived for some 80,000 people.