What is the jingoism?
the context:
A politics and solidarity that depend on demonizing others, that draws on religious sectarianism or narrow tribalism or jingoism may at times look like strength in the moment, but over time its weakness will be exposed.

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Answer

Per Wikipedia: "Jingoism is patriotism in the form of aggressive foreign policy. Jingoism also refers to a country's advocacy for the use of threats or actual force, as opposed to peaceful relations, in efforts to safeguard what it perceives as its national interests."

Answer

A simple online dictionary search will answer this question.  A synonym might be militarism or a militaristic attitude.
http://www.merriam-webster.com/dictionary/jingoism

=> Extreme chauvinism or nationalism marked especially by a belligerent foreign policy