It is not quite clear what the term "ruler" means, but assuming it refers to the Prime Minister, who is the Chief Executive of the State of Israel, he is chosen in the following way:
After the the Knesset convenes after an election, the President of Israel (who is largely a ceremonial figure) directs the leader of the party most capable of assembling a parliamentary coalition (usually the party with the most seats in the Knesset) to form a governing coalition (61 or more of the 120 seats). That party leader will then have a few weeks to submit proposals to other parties to form a coalition. If he is able to create a governing coalition, the leader of the party becomes the Prime Minister. If he fails in this task and the leader of a different party is able to create a governing coalition, the President will appoint the leader of that party to become the Prime Minister.
Elections in Israel operate very similar to elections in the UK. They must occur at some point within four years of the previous elections but may be called at any time convenient to the governing coalition within that period. (This is as opposed to the US where elections always occur at the beginning of November and term limits are exactly set.)
Your question should be for what are the Children of Israel chosen for.
In the LDS faith, Jacob's name was changed to Israel because it symbolizes his spiritual transformation and signifies his new role as a leader chosen by God.
a socialist leader is chosen by the citizens in a democratic election.
the leader of the Netherlands is chosen by voting or the person is in the parliament.
No, Israel's Prime Minister is democratically elected by the people of Israel.
How leaders are chosen in denmark
the leader who the other leader has chosen is the new leader
Israel has a Prime Minister, and a president.
Peter was chosen as the leader of the Church and apostles. Pope Gregory was chosen to be the pope and leader of the Church.
When David was chosen as the king by Samuel, Saul was king then.
No, Israel has democratic elections.
Benjamen Netanyahu