I do not have access to the map that you refer to in this question so my answer will be based on other sources.
There are generally said to be three types of weapons of mass destruction (WMD). These are nuclear weapons, biological weapons, and chemical weapons. Of these, we know the most about which countries have nuclear weapons and we are least knowledgeable about which countries have biological weapons.
We know that nine countries in the world currently have actual nuclear weapons (as opposed to programs that may or may not be aimed at creating such weapons in the future). These countries are the United States, Russia, China, the United Kingdom, France, India, Pakistan, Israel, and North Korea. According to this link, there are only three countries in the world that are currently known to have active chemical weapons programs. These are Syria, Iran, and North Korea. There are a number of other countries that have had programs in the past. The same link tells us that there are no countries that are known to have biological weapons, but that there are countries that are suspected of having them.
As to the possibility of utilizing WMD, a map cannot tell us whether the WMD will actually be utilized. This would be determined by the incentives faced by a country that has WMD. It is at least somewhat unlikely that any country would use WMD against another country except in the most extreme of circumstances. This is because the backlash against such a country would surely be severe. A country using WMD would most likely be attacked by a number of other countries. However, it is more possible for governments to use them (at least chemical and perhaps biological weapons) against their own populations. For example, we know that Iraq’s government used chemical weapons against civilians under Saddam Hussein and we also know that Syria’s government has done so recently.