​A.) What are the advantages and disadvantages of being a NATO member?

The article 5 of the NATO agreement states that an attack on a member country  mean an attack on all members.

Each member country should spend 2% of its wealth on military. 

So umbrella sharing could be one of advantages whearas financial burden could be one of disadvantages.​

=>  Article 5 of the NATO agreement states that an attack on a member country means an attack on all members.

Each member country should spend 2% of its wealth on the military. 

So umbrella sharing could be one of the advantages whereas financial burden could be one of the disadvantages.

​•  Corrected: The sentences are corrected grammatically.