Are there any peaceful muslim nations?

It only shows you are the one that is being lazy since you can't provide any objective standard.

Mine is when 90% or more of a religion's adherents do not commit violent acts

Over 40% of Muslims live in 4 countries; India, Pakistan, Bangladesh and Indonesia. Those 4 countries have more Muslims than all the Middle East and Africa combined. Pakistan's Muslim population is 96% and Pakistan has nuclear weapons. Hardly a threat to the US in spite of your argument about Islam.

The number of Muslim Jihadists are much less than 10% of the religion. It is less than 5%. Why don't you provide us with a number of how many jihadists there are in Islam today and then we can examine that.

Actually al-Taqiyya and Kitman are not explicitly introduced in the Quran. It is based on conclusions Islamic scholars have made from things said and done about (dishonest) planning or cheating, honesty, breaking of oaths (introduced in the Quran), etc. in the book and in Hadiths. See the verses below.

The Quran and Islam tell that in principle you should be honest. But in many cases where dishonesty will give a better result, you are permitted to lie (Al-Taqiyya, Kitman) and even to make false oaths or to break oaths you have made (2/225a, 5/89a+b, 13/42, 27/50 and some more)). In some cases Allah will say it is ok because it is a minor thing or because you did not really mean your oath, and in other cases he will say; "ok if you pay me some money or give me a gift for expiation afterward". And then in some cases it is not only permitted, but obligatory to use it if necessary: To defend or promote Islam.

Al-Taqiyya and Kitman can be used at least in these cases (for broken oaths there are given no real limitations if the broken oath will give a better result. By implication this also goes for ordinary promises, as an oath is something stronger than a normal promise):

To save your or others' health or life.
To get out of a tight spot or a dangerous problem.
To make peace in a family.
When it will give a better result than honesty or honoring one's oath.
To cheat women (should be remembered by girls with Muslim boyfriends wanting sex - or wanting a marriage to get residence permit in a rich country.)
To deceive opponents/enemies.
To betray enemies.
To secure one's money (very clear from Hadiths).
To defend Islam. (Compulsory if necessary to succeed.)
To promote Islam. (Compulsory if necessary to succeed.)

The number of Muslim Jihadists are much less than 10% of the religion. It is less than 5%. Why don't you provide us with a number of how many jihadists there are in Islam today and then we can examine that.

Your argument about Egypt and the Muslim Brotherhood is a little odd

“In December … Brotherhood leaders began fomenting anti-Christian sectarian incitement. The anti-Coptic incitement and threats continued unabated up to the demonstrations of June 30 and, with the removal of President Morsi … morphed into sectarian violence, which was sanctioned by … the continued anti-Coptic rhetoric heard from the group’s leaders on the stage … throughout the sit-in.”[109][111]

However the percent of Jihadists isn't particularly necessary to my assertion that Islam is dangerous.

How about white school children killing other school children?

How about white school children killing other school children? Are white school kids dangerous? You'd have to prove it to the parents who lost their children since percent isn't necessary.