An analyst says the people who have been trained to fight in Syria, they are going to go home one day and cause many insurgencies and violence throughout the Middle East, in North Africa and in other places in Asia. The comments came after Russia criticized the deployment of US troops to Jordan over the Syrian crisis, describing the move as an unconstructive step that threatens to expand the conflict. Russian Foreign Ministry Spokesman Alexander Lukashevich said on Friday that the deployment of US troops in Jordan contradicts the principles of the internationally-agreed Geneva Communiqué, which calls for ending the Syrian crisis through negotiations, AFP reported. There have been several dozen American troops, mainly special forces, in Jordan since last year.