Which of the following examples would be a reason to institute sanctions against another country? A.
Iran attempts to develop nuclear weapons.

B.
Iran increase trade with Saudi Arabia.

C.
Turkey and Iraq work together to defeat ISIS.

D.
Kuwait increases its petroleum production.

Correct answer is A.  Iran attempts to develop nuclear weapons.

Explanation:

Option A is correct as any development of nuclear weapon by any country, including Iran presents a threat for world peace, and that is why it can lead to certain sanctions by certain institutions such as UN.

B is not correct as development of trade doesn't present any type of threat for peace.

C is not correct as fight against terrorist organizations should be a common goal of all countries.

D is not correct as production of petroleum is not a threat but necessity.

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sounds good to me mate!