Since Syria's own Arab Spring protests there have devolved into a decade-plus bloodletting,

fleeing civilians have been caught in the crossfire between the Assad regime,

its Russian and Iranian allies, and various opposition groups.

Now the conflict has reignited in northwest Syria's Idlib and Aleppo provinces principally.

Before this new offensive began, special correspondent Leila Mulana Allen traveled there to meet some of the victims of this war and its survivors.

A brutal return to the bloodiest days of the Syrian Civil War, as allied Syrian rebel forces

surged from the country's rebel-held northwest enclave to seize the country's second city, Aleppo,

in a matter of hours.

But as rebels continue to push their way towards the heart of the country, its civilians back in Idlib

and Aleppo bearing the terrible brunt of Syrian President Assad's retaliation as his allies in

Russian warplanes double down on their bombardment. Trapped by Syrian forces on one side and the

Turkish border on the other, more than four million destitute grieving civilians languish in despair.

Families here in the rebel-held northwest have been under assault from

Syrian and Russian forces for years, suffering in silence.

Many of the young children born here don't know a life without the sound of bombs and bullets.

We're just a few miles from the front line here,

and the tens of thousands of civilians living in these areas so close to Syrian regime territory

faced the constant threat of both shelling from regime forces

and airstrikes carried out by Russian warplanes. When tensions are high,

they're sometimes attacked every few days. Many of those living here have already been displaced,

once, twice, half a dozen times by this bitter and brutal civil war. They tell me they fear they

don't belong anywhere now. Their Syrian passports, blocked by much of the world,

...