"We do have nuclear bombs for tactical aircraft and air launched tactical nuclear missiles as well".
"The biggest difference relates to the supposed role of nuclear weapons in American military strategy", Michael Klare, an expert at the Arms Control Association, told Xinhua.
In 1970, the Treaty on the Non-Proliferation of Nuclear Weapons, or NPT, was ratified, and it was extended indefinitely in 1995.
"One of the most disturbing and significant changes to US policy outlined in the NPR is the tighter integration of USA nuclear and conventional forces, including training and exercising with these integrated forces, so USA forces can operate - as the NPR states - in the face of nuclear threats and employment", she said. There is no need to build new nuclear weapons or to expand their goal beyond deterrence.
"This is the textbook definition of nuclear warfighting".
"The Americans are shamelessly threatening Russian Federation with a new atomic weapon", Iranian President Hassan Rouhani reportedly said in a televised speech.
"That's why we need to start new initiatives in Europe for arms control and disarmament", Gabriel said in a statement, adding that developing new weapons sent the wrong message and risked triggering an arms race.
This ensures that adversaries know that any nuclear strike on.
James Acton, a nuclear weapons specialist at the Carnegie Endowment for International Peace, said that offer seems disingenuous.
"Our strategy will ensure Russian Federation understands that any use of nuclear weapons, however limited, is unacceptable", the document states.
In a statement, the Union of Concerned Scientists said the NPR misrepresented China's nuclear power. "By any measure, the USA arsenal is far superior", Gregory Kulacki, an expert at UCS said.
Indeed, the NPR contends that Russian Federation is continuing to modernize its arsenal of non-strategic nuclear arsenal of roughly 2000 nuclear warheads.
Russia's Foreign Ministry on Saturday expressed disappointment at the USA policy, saying the contents come off as confrontational and anti-Russian, according to the report. "Russia's belief that limited nuclear first use, potentially including low yield weapons, can provide such an advantage is based, in part, on Moscow's perception that its greater number and variety of non-strategic nuclear systems provide a coercive advantage in crises and at lower levels of conflict".