islam never force anybody to convert but spread the message of Allah revealed to Prophet. It was command of Allah to Prophet to reach the message of His because Quran, the book of human being not for only Muslims. Whoever belive in Quran and Prophet they become a Muslim. these are ways happened everywhere when muslims try to spread message of Allah, some were opposed and tried to harm belivers. Belivers have the right to defend for the sake of Allah. If Muslim tried to invade Euopean countries, all states would have been muslim countries today. To be clear all misunderstanding, let us try to read Quran and Sunnah and understand first for the success life after date. thanks MNK