Yes s/he can. The President is at the top of the National Command Authority which controls the release and execution of Nuclear Control Orders.
The United States has a two-man rule in place. Only the president can order the release of nuclear weapons but the order must be confirmed by the Secretary of Defense.
USUSSRUKFranceChinaetc.
In the US, yes he has the "football" that cryptographically controls the PALs (Permissive Action Link) that arms and disarms each device. Elsewhere nobody knows for sure.
As the category for this question is "Nuclear weapons", I'm presuming it refers to nuclear arms.As of 2012, the three countries with the largest stockpiles of nuclear weapons are, in order from most to least:RussiaUnited StatesFrance
How can it be nuclear and biological at the same time.
It's a pact in order to reduce the production of nuclear weapons
Nations that are known or believed to possess nuclear weapons are sometimes referred to as the nuclear club. In order of acquisition of nuclear weapons these are: the United States, Russia, the United Kingdom, France, and China.
Mutually assured destruction, called for short (and sensibly so): the M.A.D. Principle.
I feel uneasy about your plan to start a mail order nuclear weapons business.
No, this would require legislation from Congress. This is because currently there is no law banning assault weapons for an executive order to clarify the scope of.
The peak was on the order of 10,000 having a very wide range of yields.
protested in rallies and demand a weapons freeze NovaNET!