The Trump Administration is not likely to agree to extend the New START (Strategic Arms Reduction) Treaty for five more years, a senior administration official told a group of reporters on Friday.

"We don’t have a definitive US position yet, but there are several considerations including renegotiation, returning to the 'Treaty of Moscow' model, or an extension, but the latter is unlikely," the official said.

The New START Treaty entered into force in 2011. The treaty will expire in 2021 if it is not replaced by another agreement by that time. In 2021, the Treaty can be extended for five years until 2026 upon mutual agreement of the sides.