All 4 players that were asked to join Lebanon were of Lebanese decent. 2 playing in Scandinavia and the other in Australia. I don't think Soony is very likely to train with them though seeing as I believe that he has never been to Lebanon. But there is always a first and the exposure could gain Sporting Kc some international fans much like Chhetri did for the Wizards in 2010.
The best case scenario is that Soony trains for Lebanon, gets some good playing time, and comes back to the US ready for a new season a leg up on everyone else. The worst case scenario is that this situation could end up being like the Teal Bunbury situation we saw in 2010 when Teal controversially chose to play for the US over Canada after previously playing for Canada's U-20 and U-17 teams.
Soony has played for the United States U-20 team once, scoring one goal.