Which sentence from the document shows the purpose of the Doctrine?

The Russian government asked for these friendly negotiations.

We must declare to all European powers that any attempt on their part to extend their system into North or South America will be seen as dangerous to our peace and safety.

The strongest proof is that European countries thought it necessary to interfere by force in Spain.

Nor can anyone believe that our brothers in Latin America would adopt this type of government if they had a choice.