Israel

The Government is the executive branch of the State. (Basic Law: The Government (2001), Sec. 1)

(a) The Government is made up of the Prime Minister and other ministers, and in a rotation government - also the Alternate Prime Minister.
(b) The Prime Minister, and in a rotation government –the Alternate Prime Minister as well, shall be from among the Members of the Knesset. Another minister need not be from among the Members of the Knesset.
... (Basic Law: The Government (2020), Sec. 5)

(a) A person who is not an Israeli citizen or a resident of Israel shall not be appointed as minister.
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(d) A person shall not be appointed as minister if he has a citizenship that is other than Israeli, if the laws in the country of which he is a citizen enables his release from this citizenship, only after he has done whatever is necessary on his part to be released from it.
… (Basic Law: The Government (2001), Sec. 6)

(a) Once a new government must be formed, after consulting the representatives of the Parliamentary Groups, the President of the State shall assign the task of forming a government to one of the Knesset Members, who has agreed to do so.
… (Basic Law: The Government (2001), Sec. 7)

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(c) The Member of the Knesset who formed a government shall head it.
(d) Once the Government has been formed, it shall present itself before the Knesset, announce the guidelines of its policy, its make-up, and the distribution of functions, or spheres of activity among the Ministers, and shall request an expression of confidence. The Government shall be formed once the Knesset has expressed confidence in it, and from that moment the Ministers shall assume office. (Basic Law: The Government (2001), Sec. 13)