; and (2) listing specific goods, services, technology, financing, and support covered by subsection (b). 239C. Sanctions with respect to Russian detention of 24 Ukrainian naval personnel on and after November 25, 2018 (a) In general Not later than 90 days after the date of the enactment of the Defending American Security from Kremlin Aggression Act of 2019 , the President shall impose the sanctions described in section 224(b) with respect to not fewer than 24 senior officers of the Russian Federal Security Service who had not been sanctioned by the United States before such date of enactment. (b) Duration Sanctions imposed under subsection (a) shall remain in effect until the date on which the Secretary of State determines and certifies to the appropriate congressional committees that the Ukrainian naval personnel detained by forces of the Russian Federation on November 25, 2018, are no longer in detention. 239D. Sanctions for violations by the Russian Federation of freedom of navigation (a) Determination of violation (1) In general Not later than 90 days after the date of the enactment of the Defending American Security from Kremlin Aggression Act of 2019 , and every 180 days thereafter, the Secretary of State shall determine and certify to the committees specified in subsection (d) whether the Government of the Russian Federation, including the armed forces or coast guard of the Russian Federation, has interfered with the freedom of navigation of one or more vessels in the Kerch Strait or elsewhere in a manner inconsistent with international law during the 180 days preceding the certification. (2) Publication of certification Not later than 15 days after submitting a certification under paragraph (1), the Secretary shall publish the certification in the Federal Register. (b) Imposition of sanctions On and after the date that is 90 days after the publication of a certification under paragraph (2) of subsection (a) indicating that the Government of the Russian Federation has interfered with the freedom of