“A senior U.S. official on Sunday urged the Syrian opposition to attend a planned international meeting in Rome this week, saying it was a chance for rebels to make their case for more support.
The official … said there was dissension among the opposition about the utility of such meetings and some members have signaled they may not attend.
There appear to be growing tensions between the fighters on the ground and opposition members outside the country.
The Syrian National Coalition said on February 22 that it had turned down invitations to visit Washington and Moscow to protest what it described as international silence over the destruction of the historic city of Aleppo by government missile strikes.
On Saturday, the U.S. State Department issued a statement condemning a Syrian army Scud missile attack that killed dozens of people on Friday in Aleppo.