Why Do Democracies Not Fight Each Other ? try to write these as an essay, please

Why Do Democracies Not Fight Each Other ?
try to write these as an essay,
please only using the material that i give to you
using  plain english?
Bruce Bueno de Mesquita et.al. “An Institutional Explanation of the Democratic
Peace,” American Political Science Review.  Vol. 93, No. 4 (December 1999).
Duncan Hunter, a former Congressman from San Diego, argued in 2017 that the  United States should launch a preemptive military attack against North Korea because  of its nuclear weapons.  Given what you know about democracies and the conditions  under which they are willing to start a war, how likely do you think it is that any
President (Republican or Democrat) would follow Hunter’s advice?  (Hint: in order to  answer this well you need to explain what the likely repercussion to the U.S. would be for a preemptive strike, how this would affect a President’s ability to get re-elected, and to what degree a President would be influenced by this.)