When determining the constitutional limits to the parliamentary right to ask questions and receive information, consideration must be given to the importance attached to this right within the constitutional order. This is also relevant when interpreting and applying the concept of jeopardised state interests (cf. BVerfGE 124, 78 <123>; 137, 185 <204 para. 149>). In this context, it must be noted that in its Rules on Document Security, the Bundestag has set out detailed provisions for the protection of official secrets in the exercise of parliamentary functions (cf. BVerfGE 67, 100 <135>; 77, 1 <48>; cf. furthermore BVerfGE 70, 324 <359>). The duty to maintain confidentiality arising under parliamentary regulations is affirmed by penal sanctions set out in § 353b(2) no. 1 of the Criminal Code (Strafgesetzbuch – StGB). These provisions on the protection of confidentiality reflect the fact that Parliament cannot exercise its legislative powers, its budget powers or its powers of parliamentary oversight if it does not partake in the Federal Government’s secret knowledge (cf. BVerfGE 67, 100 <135>; 70, 324 <359>; 137, 185 <240 and 241 para. 149>; 143, 101 <143 para 139>; BVerfG, Order of the Second Senate of 13 June 2017 – 2 BvE 1/15 –, juris, paras. 97 and 98). Moreover, it must be taken into account that within the parliamentary system of government established by the Basic Law, the Federal Government is not the sole guardian of state interests; rather, the Bundestag and the Federal Government are jointly entrusted with safeguarding the legitimate interests of the state (cf. BVerfGE 67, 100 <136>; 124, 78 <124>; 137, 185 <241 para 149>). Parliament and its organs may not be subjected to the same treatment as external parties belonging to circles from which information needs to be kept secret in order to protect legitimate state interests (cf. BVerfGE 124, 78 <124>; 137, 185 <241 para. 149>). Thus, the Federal Government can generally not invoke state interests of the Federation vis-à-vis the Bundestag if effective safeguards for preventing the disclosure of official secrets have been put in place on both sides. This does not disregard the fact that compliance with provisions for the protection of official secrets does not necessarily rule out the possibility of secrets being disclosed; yet, this risk applies to all three state powers alike (BVerfGE 67, 100 <136>; 137, 185 <241 para. 149>; 143, 101 <143 para. 138>; BVerfG, Order of the Second Senate of 13 June 2017 – 2 BvE 1/15 –, juris, para. 98).