This is where we are now. Historically it has been taken as the Roman Empire, the broken horns symbolized the dividing and disintegration of the Empire. The new horn symbolized the revived Roman Empire, and the prophecy seemed to come true as a 10-nation military alliance appeared in Europe in 1995, called the Western European Union (or the Brussels Treaty Powers). The 10 nations that made up the alliance were: Belgium, France, Germany, Greece, Italy, Luxembourg, Netherlands, Portugal, Spain and the United Kingdom. This was seen as prophetic fulfillment of Daniel’s prophecy. Unfortunately, on March 31, 2010, the 10 nations announced that they had agreed to terminate their alliance and transfer the Western European Union’s powers to the European Union, which by now has 28 members, soon to be 27 after Brexit.
There is another interpretation of Daniel’s prophecy of the horns. The horn that grew up is Muhammad. He had conquered the Arabian peninsula at his death in 632 A.D. In 100 short years under the Caliph Umayyad three large regions of the world had been conquered, the whole Middle East as far as Pakistan, Egypt and Northern Africa and Spain.
Then in 732 A.D. they were defeated at the battle of Tours ( https://lenbilen.com/2013/11/29/2323/ )
The Ottoman empire in Eastern Europe, Africa and the Middle East was not defeated until WWI.
All Muslim majority countries adhere to one or more aspects of Sharia law as defined in the Quran, but there are many schools of Islamic theology, all claiming to be the one and only true interpretation of the will of God, as defined by his messenger, Muhammad.
The western world has not declared war against Islam, but Islam is already waging a “Holy War” named Jihad. For Al Qaeda and ISIS it is a very real war of terror, but for the majority of Muslims it is more a war of ideologies and emigration.