How interesting. Does this mean that President Trump’s anti-globalism is making the USA stronger?Reversing the subservient course of the previous administration?
A country in the game must maintain equilibrium--it cannot extend friendship if it does not retain the resources to mediate conflicts between allies. More allies thus increases the country's responsibility to help mediate conflicts that may arise, which could overstretch and decrease the country's own overall welfare.
More @ Having more allies may decrease a country's power