Why the US of A sounds exactly like Sheldon Cooper

Sheldon (USA) - You must stop building nuclear weapons.
Iran - I am not building nuclear weapons.
Sheldon - I do not trust you.

Sheldon - You must let me inspect your apartment.
Iran - Why would I do that?
Sheldon - Because the security council told you so.

(Turning to Leonard(EU), Howard(Israel) and Raj (South Asia)) - Tell him.

Leonard - Leave the guy alone.
Sheldon - Do it or I will tell everyone about ur goof-ups with Penny, Bernadette and Lucy. TELL HIM!

Leonard, Howard and Raj (in unison) - Please let Sheldon inspect your apartment.

Iran - I do not even have nukes. You have nukes.
Sheldon - My nukes are good. Yours are for terrorism.
Iran - I never ever attacked anybody. The same cannot be said of you.

Sheldon - Doesn't make a difference.
Iran - Why is that?
Sheldon - Because I said so. I am brilliant.
Iran - How is that even relevant?

Sheldon (exasperated) - I will impose sanctions on you.
Iran - Hello, I do not trade with you, what will you sanction?

Sheldon (Turning to Leonard, Howard and Raj ) - Tell him you will impose sanctions on him.
Leonard, Howard and Raj (in unison) - Not again!

Sheldon - Well gentlemen, you had your chance....
Leonard, Howard and Raj (in unison, cutting him off) - We will impose sanctions on you.

Raj - Come on Sheldon, now let the guy go!

Sheldon - One last thing.
Iran - What??
Sheldon - You really should bring in democracy.

Iran - Really? The last time I had democracy, you were the one who destroyed it.
Sheldon - Well, I must tell you that it was for your own good.....