and increase cooperation with respect to the Democratic People's Republic of Korea, by the governments of the countries on the list required by paragraph (3). (c) Form of report Each report required by subsection (a) shall be submitted in unclassified form but may include a classified annex. 402. Authorization to alter United States relations with countries enabling the Democratic People's Republic of Korea (a) In general The Secretary of State may take such actions as are necessary to induce countries to take measures to diplomatically and economically isolate the Democratic People's Republic of Korea on the list required by section 401(b)(3). (b) Actions included Actions described in subsection (a) may include— (1) reduction of the diplomatic presence in the United States of countries on the list required by section 401(b)(3)