Light arms supplied by the United States are flowing to "moderate" Syrian rebel factions in the south of the country, officials said on Monday, according to Reuters.
American funding for months of further deliveries has been approved by Congress, U.S. and European security officials cited in the report said.
The weapons, most of which are moving to non-Islamist Syrian rebels via Jordan, include a variety of small arms, as well as some more powerful weapons, such as anti-tank rockets, according to Reuters.
The deliveries do not include weapons such as shoulder-launched surface-to-air missiles, known as MANPADs, which could shoot down military or civilian aircraft, the officials said.
The weapons deliveries have been funded by the U.S. Congress, in votes behind closed doors, through the end of government fiscal year 2014, which ends on September 30, two officials said.
The apparently steady weapons flow contrasts with the situation last summer, when lethal U.S. aid to the Syrian rebels dried up for a time due to congressional reservations.
Congressional committees held up weapons deliveries for months over fears that U.S. arms would not prove decisive in the rebels' efforts to oust President Bashar Al-Assad and his government and could well end up in the hands of Islamist militants.
A U.S. official familiar with recent developments said national security officials and members of Congress are more confident that weapons delivered to southern Syria are going to, and remaining in, the hands of moderate rebels rather than militant jihadist factions.
Congress approved funding for weapons deliveries to the Syrian rebels in classified sections of defense appropriations legislation, two sources familiar with the matter said. It was not clear when the funding was approved, but unclassified defense funding passed Congress in late December.
There has been pressure to arm the Syrian rebels for quite some time, particularly since the U.S. government confirmed that the Syrian army used chemical weapons against rebel forces on multiple occasions, thus violating the “red line” set by President Obama. This confirmation came even before the major chemical attack near Damascus in August, which killed hundreds
The U.S. said at the time that it will increase the “scope and scale” of its assistance to rebels in Syria in response to the use of chemical weapons by the Assad regime.
However, lawmakers were concerned that weapons could reach factions like the Al-Nusra Front, which has pledged allegiance to Al-Qaeda chief Ayman al-Zawahiri.
Islamist rebel factions such as Al-Nusra and the Islamic State of Iraq and the Levant (ISIS) have performed atrocities during the ongoing civil war, including publicly beheading those accused of collaborating with the Assad regime, and even executing members of rival rebel groups.
In recent days, the fighting between ISIS and other Syrian rebels has escalated, with hundreds having been killed in the fighting between rival groups.
Officials who support providing U.S. arms to the rebels acknowledged that the latest approval of arms has not greatly increased U.S. expectations of victory by anti-Assad forces, whether moderate or militant.
"The Syrian war is a stalemate. The rebels lack the organization and weapons to defeat Assad; the regime lacks the loyal manpower to suppress the rebellion. Both sides' external allies... are ready to supply enough money and arms to fuel the stalemate for the foreseeable future," said Bruce Riedel, a former senior CIA analyst and sometime foreign policy adviser to President Barack Obama.
Both U.S. and European officials said that "moderate" rebels had recently consolidated their positions in the Syrian south, where they are pushing out elements linked to al-Qaeda. More militant factions remain dominant in the north and east.
Rebels said back in June of 2013 they had received Russian-made “Konkurs” anti-tank missiles supplied by Saudi Arabia. Other reports said that the Central Intelligence Agency had begun moving weapons to Jordan from a network of secret warehouses and plans to start arming small groups of vetted Syrian rebels within a month.
A White House spokeswoman had no comment on Monday’s report. Other U.S. agencies did not respond to requests for comment.
As for "non-lethal" aid like communications and transportation equipment, the United States hopes to resume deliveries to moderate groups in Syria soon, a U.S. official said on Monday, according to Reuters.
The United States and Britain suspended non-lethal aid to northern Syria in December after reports that Islamist fighters seized Western-backed rebel weapons warehouses, highlighting fears that supplies could end up in hostile hands.
Non-lethal aid was resumed to civilian groups in that region in late December.