In Syria today, Russian and Syrian warplanes targeted civilian areas held by opposition fighters.

And Turkey, which backs some of the multifaceted opposition, called on Syrian President Bashar al-Assad to negotiate.

It all comes days after rebels swept into parts of northwest Syria that the regime had controlled for years and reignited a

once static war with broad implications for a region already embroiled in conflict. Nick Schifrin

reports and a warning some of the images in this story are disturbing. In opposition held Idlib

today, Russian scorched earth.

Air strikes on behalf of its Syrian ally against Syrian civilians inside a hospital.

Russia has long targeted Syrians who oppose the regime.

Today's strikes in Idlib.

And this weekend on Aleppo,

once again targeted victims who weren't even born when this 14-year-old war began.

They are terrifying and forced civilians to flee.

But today, it is government forces on the run.

On Friday, NewsHour Syria producer Abdel Razak al-Shami filmed as rebels prepared a surprise

assault.

For the last nine years, the opposition in Green has held most of Idlib province in northwest

Syria.

The Kurds, backed by the U.S., in yellow in the northeast, the regime and its allies in red, with

pockets of land controlled by the Islamic State in purple.

Back in 2016, after five years of fighting, Syrian soldiers, with the help of Russian airstrikes

and Iranian-backed Malipa, Syria's second largest city.

Last week, a patchwork of opposition groups, the Islamist Hayat-Tahrir al-Shahm, designated

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