The amount otherwise includible in gross income under subsection (a) in respect of any security shall be reduced by an amount equal to the amount (if any) of the loss described in subsection (a)(2) which did not result in a reduction of the taxpayer’s tax under this subtitle for any taxable year, determined under regulations prescribed by the Secretary.
This section shall not apply to any recovery of a foreign expropriation loss to which section 1351 applies.