Washington, February 7 (RHC)-- The U.S. has successfully tested an updated version of a B-61 atomic bomb in defiance of the Nuclear Non-Proliferation Treaty, which calls for nuclear disarmament.

The National Nuclear Security Administration said in a statement that the test was conducted by the Los Alamos and Sandia national laboratories, the National Journal reported.

The analysis "is a significant achievement and gives us confidence in our ability to move forward with our efforts to increase the safety and security of the bomb," stated Don Cook, NNSA deputy administrator for defense programs.

The test was meant to verify how a new model of the B-61 bomb would work under routine conditions or accident scenarios, according to the NNSA. The analysis also included the targeting accuracy of the revamped model of the nuclear gravity bomb also called Mod-12. Experts said that engineering work for Mod-12, which has been underway for two years, is aimed at keeping B-61 bombs ready for potential use.