Syria - New claims of Chemical use: Suspected chemical substance dropped from planes.

Syria - New claims of Chemical use: Suspected chemical substance dropped from planes.(YNet).Two people were killed and 20 others were injured in northwestern Syrian province of Idlib Tuesday after warplanes dropped bags containing "strange substances," Al-Jazeera reported, saying the suspicious material was apparently chemical weapons.

Videos uploaded by the Qatari news network show casualties having difficulties breathing treated in makeshift hospitals. One video showed a healthcare professional drawing attention to the white foam coming out of an injured man's mouth.

The issue of possible chemical attacks by President Bashar Assad's government has become a crucial factor that could lead to the United States and other western powers stepping up their involvement in the Syrian civil war.

Both Washington and Jerusalem have expressed concern about chemical weapons falling into the hands of terrorist groups - either hardline Islamist rebels fighting to topple Assad or his regional allies.

Last week rebels claimed 42 people suffocated to death following a chemical attack by Assad's forces on a Damascus suburb.

Also last week, official mouthpiece Al-Watan said numerous regime fighters were hospitalized suffering from similar symptoms, namely difficulties in breathing. Some of the casualties have died, Al-Watan reported. Read the full story here, more here.