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Canon fire rings out across northern Aleppo.
New video posted to social media is said to show fighters from the Al-Shamiya Front -- a recently-formed alliance of rebel groups -- targeting regime soldiers.
It comes as a Turkish official says Turkey and the U.S. are aiming to finalize a plan this month to train Syrian rebels...
...who are not only taking on the regime of Syrian President Bashar Al-Assad....but sometimes also Islamic State militants, in a multi-sided civil war, now in its fourth year.
Other amateur video purports to show the aftermath of aerial bombing by Assad's forces in a Damascus suburb.
Turkey, which shares a border with Syria, has been a reluctant partner in the U.S.-led coalition against Islamic State.
It's advocating a strategy that includes the removal of Assad.
But according to a Turkish official, the country will help train some 15,000 Syrian rebels over the
