U.S. to send $70 mln in non-lethal aid to Syrian opposition

(Adds details and background) WASHINGTON, March 13 (Reuters) - The U.S. State Department said on Friday it was working with Congress to provide about $70 million in new non-lethal assistance to the Syrian opposition fighting President Bashar al-Assad. The aid comes as the U.S. military separately prepares to train and equip Syrian rebels to fight Islamic State militants in Syria. The non-lethal aid will go toward basic community services, supporting "vetted units of the armed opposition," digita