"This detachment that participated in the exercise and remained in Jordan includes Patriot missile systems, fighter aircraft, and related support, command, control, and communications personnel and systems," Obama stated.
On June 9, the US began a multinational military exercise in Jordan’s desert areas, bordering Syria. About 8,000 troops from 19 countries participated in the exercise.
On June 4, Russian Foreign Ministry spokesman Alexander Lukashevich issued a statement, saying, “We have more than once stated our opinion on this -- foreign weapons are being pumped into an explosive region.”
“This is happening very close to Syria, where for more than two years the flames are burning of a devastating conflict,” the statement added.
The Syria crisis began in March 2011, and many people, including large numbers of government forces, have been killed.
Damascus says the chaos is being orchestrated from outside the country, and there are reports that a very large number of the militants are foreign nationals.
The Syrian government says the West and its regional allies -- especially Qatar, Saudi Arabia, and Turkey -- are supporting the militants.
In addition, several international human rights organizations say the militants operating in Syria have committed war crimes.
The United States has left about 700 combat-ready troops in Jordan after a training exercise in the country, US President Barack Obama says.
In a letter to US House of Representatives Speaker John Boehner on Friday, Obama said that the deployment was made at the request of the Jordanian government.
He stated that about 700 of the US troops deployed to Jordan as part of a military training exercise, which ended on Thursday, would stay in the country.
The troops will stay until the security situation becomes such that they are no longer required, Obama added, but provided no further details.