The U.S. Treasury Department issued new sanctions on Iran over allegations it recruited child soldiers to fight for Syrian President Bashar al-Assad in Syria.

U.S. President Donald Trump addressed the United Nations General Assembly in New York on Tuesday.

Russia will supply Syria with an S-300 surface-to-air missile system within two weeks, Russian Defense Minister Sergei Shoigu said Monday.

You may not have noticed it -- the chair that wasn't there. The seven-year Syrian war is ending with a government victory. The U.S. is missing from peace talks.

The Iranian economy is in freefall. With only six weeks to go before the second tranche of U.S. sanctions, experts believe the current regime cannot survive.

Gazprom is well-placed to represent Russia's expansion into Syria.

Russia and Turkey agreed Monday to establish a demilitarized zone in the Syrian province of Idlib amid concerns of a potentially catastrophic offensive against rebels in the area.

Israel marked the 30th anniversary of its first satellite launch by releasing once classified footage of the event and declassifying images of Bashar Assad's palace in Syria taken by its newest satellite.

Turkish officials signaled they're willing to intervene to prevent a planned offensive by forces loyal to Syrian President Bashar al-Assad in Idlib province.

The United Nations warned of a potential for the "worst humanitarian catastrophe" of the century in Syria as thousands were internally displaced in the rebel-held enclave of Idlib.

The Pentagon sent more than 100 U.S. Marines to reinforce a coalition outpost in southern Syria after a threatened attack from Russia, U.S. officials said.

Syrian forces are closing in on the last rebel stronghold in Idlib, raising concerns that millions of civilians could be caught in the crossfire.

Syrian government warplanes struck the last rebel-held province of the country Tuesday.

U.N. Special Envoy to Syria Staffan de Mistura warned of a "perfect storm" facing the country's Idlib province.

The Russian military has amassed a fleet of at least 10 warships and two submarines off Syria's northwest coast in preparation for a possible assault.