m) Appoints and recalls plenipotentiary representatives of the U.S.S.R. to foreign states;
n) Receives the credentials and letters of recall of diplomatic representatives accredited to it by foreign states;
o) Proclaims martial law in separate localities or throughout the U.S.S.R. in the interests of the defence of the U.S.S.R. or for the purpose of ensuring public order and state security.
ARTICLE 50. The Soviet of the Union and the Soviet of Nationalities elect Credentials Commissions which verify the credentials of the members of the respective Chambers.
On the recommendation of the Credentials Commisions, the Chambers decide either to endorse the the credentials or to annul the election of the deputies concerned.
ARTICLE 51. The Supreme Soviet of the U.S.S.R. when it deems necessary, appoints commissions of enquiry and investigation on any matter.
It is the duty of all institutions and public servants to comply with the demands of these commissions and to submit to them the necessary materials and documents.
ARTICLE 52. A member of the Supreme Soviet of the U.S.S.R. may not be prosecuted or arrested without the consent of the Supreme Soviet of the U.S.S.R., and during the period when the Supreme Soviet of the U.S.S.R. is not in session, without the
