Provide a curved arrow mechanism for the following SN2 reaction. 
Definitions:
Oligarchical Regime
is a form of government in which power rests with a small number of people distinguished by royalty, wealth, family ties, education, corporate, or military control.
Republic
A form of government in which power resides in elected individuals representing the citizen body and government leaders exercise power according to the rule of law.
Elite Theory
A theory in political science and sociology which posits that a small minority, consisting of members of the economic elite and policy-planning networks, holds the most power—and that this power is independent of a state's democratic elections process.
Self-Interests
The focus on one's own advantages or well-being without necessarily considering those of others.
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