かく拡散かくさん防止ぼうし条約じょうやくじゃないです
kakukaku sambō shi jōyakujanaidesu

Noun
Desu Copula
Negation Auxiliary

The polite negative form of 核拡散防止条約

1. It's not the Nuclear Non-Proliferation Treaty.

Negative
Polite
Casual Register