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 of an alternate prime minister.
(b) The Prime Minister, and in a rotation government – the alternate prime minister, shall be from among the Knesset Members. A Minister need not be from among the Knesset Members.
(Basic Law: The Government (2020), Sec. 5)

(a) A Minister must be an Israeli citizen and a resident of Israel.
…
(d) If a person holds a citizenship other than Israeli, and if the law of the country of which he is a citizen allows him to be released from such citizenship, he shall be appointed Minister only after he has taken all measures necessary to be released from such citizenship.
… (Basic Law: The Government (2001), Sec. 6)

(a) When a new Government has to be constituted, the President of the State shall, after consultation with representatives of party groups in the Knesset, assign the task of forming a Government to a Knesset Member who has notified him that he is prepared to accept the task.
… (Basic Law: The Government (2001), Sec. 7)

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(c) The Knesset Member who has 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 composition and the distribution of functions among the Ministers, and shall request for an expression of confidence. The Government shall be established once the Knesset has expressed confidence in it, and the Ministers shall thereupon assume office. (Basic Law: The Government (2001), Sec. 13)