Okay, Squiggy. Here are the facts, as we know them.
1. The US is, so far, the only country to use nuclear weapons...HOWEVER, those weapons were used on an enemy (Japan) who had attacked us first, and we didn't have the means to go house-to-house with an enemy who thought surrender was the height of dishonor.
2. Chemical weapons (first used by both sides in WW1) are outlawed by the Geneva Convention because they cause 'unneccesary suffering'. What that means, I don't know, but accept that as fact. Since WW1, only one country has used chemical weapons. Iraq used chemical weapons first on the Iranians that pushed their army back into Iraqi territory during the 1980's (on their own soil, I might add), and on the Kurdish population of Iraq during the same period. Later, Iraq invades Kuwait, under the guise of recapturing stolen terrirory. Iraq threatened to use the same type of chemical weapons on coalition troops during the Gulf War, but were deftly dissuaded from that action by the promise of the UK that one chem attack will result in 2 nuclear attacks. Also during the Gulf War, Saddam Hussein launched attacks against a non-combatant nation in order to shift the focus of the war onto another area. Now suppose this guy has nukes. Think he's going to be scared to up the ante during his next military campaign? I don't think so. True, that last bit is supposition, but it is something to think about and draw your own conclusions.