First of all, I didn't set a red line. The world set a red line. The world set a red line when governments representing 98 percent of the world's population said the use of chemical weapons are abhorrent and passed a treaty forbidding their use, even when countries are engaged in war. __________________首先,我并没有设置底线.设下底线的全世界人民.当代表全世界98%人口的政府表示,使用化学武器是令人憎恶的行径,并通过了即使是发生战争也禁止使用化学武器的条约后,我们也就设下了底线. _______________________