Snopes is insightful, do check it out. Snopes also disallows copying & pasting:
Is the UN Arms Trade Treaty a 'legal way around the 2nd Amendment?'
http://www.snopes.com/politics/guns/untreaty.asp
fox, fwiw: The treaty covers battle tanks, armored combat vehicles, large-caliber artillery systems, combat aircraft, attack helicopters, warships, missiles and missile launchers, and small arms and light weapons. It prohibits states that ratify it from transferring conventional weapons if they violate arms embargoes or if they promote acts of genocide, crimes against humanity or war crimes. The treaty also prohibits the export of conventional arms if they could be used in attacks on civilians or civilian buildings such as schools and hospitals.. treaty requires countries to take measures to prevent the diversion of conventional weapons to the illicit market. This among the provisions gun-rights supporters in Congress are concerned about.
The treaty would require countries that ratify it to establish national regulations to control the transfer of conventional arms and components and to regulate arms brokers, but it will not explicitly control the domestic use of weapons in any country.
The chance of adoption {ratification} by the US is slim.. A majority of Senate members have come out against the treaty. A 2/3 majority needed in the Senate to ratify. http://www.foxnews.com/politics/2013/06/03/lawmakers-urge-obama-to-reject-un-arms-treaty-as-it-opens-for-signature/
United Nations: Sources of small arms supplies to areas of crisis and conflict are varied. Domestically, small arms can enter illicit circulation through distribution, theft, leakage, divergence, pilferage or resale. Shipments of small arms to conflict zones from abroad are most often small-scale consignments - a steady trickle of weapons across porous borders. The cumulative destabilizing force of such small-scale trade is not to be underestimated, particularly in unstable regions where small arms are traded from one conflict to another.
Govts should ensure that small arms from Govt stocks or private ownership are not misused and do not enter illicit circuits, where their use may contribute to instability and to exacerbating poverty. To attain those goals, within the UN, countries have agreed on several commitments on small arms control..
Countries are giving separate attention to closely related issues, such as armed violence, child soldiers, the protection of civilians in armed conflict, ammunition, the arms trade treaty and the UN register of conventional arms.
Most present-day conflicts are fought mainly with small arms, which are broadly used in inter-State conflict. They are the weapons of choice in civil wars and for terrorism, organized crime and gang warfare. http://www.un.org/disarmament/convarms/SALW/