一刀両断：いっとうりょうだん [i-ttou-ryou-dan]

物事を思い切って処理するたとえ。また、物事をためらわずにきっぱり決断するたとえ。一刀のもとに物を真っ二つに断ち切る意から。

Even though we treat things dangerously. Also, you decide to make a decision without hesitating things. From the meaning of breaking things into two in one sword.