What was the reason of Imam Khomeini's migration from Iraq to France?

Answer: in the late periods of Pahlavi government, while Imam Khomeini lived in Iraq in exile, there was held a meeting between Iran and Iraq's foreign ministers in New York in which they decided to dismiss Imam Khomeini from Iraq.
The Iraqi army surrounded Imam Khomeini's house in the first day of Mehr 1357 in Najaf. The Muslims in Iran, Iraq and other countries reacted angrily to this news. Iraq's manager of security organization said in a meeting to Imam Khomeini that if he wants to stay in Iraq, he should let go off the combat and politics. In response, Imam Khomeini firmly stated he would never accept any compromise and getting silent in front of the responsibility he had toward the Islamic nations. In the 12^th of Mehr, in purpose of going to Kuwait, Imam Khomeini left Najaf. By the order of Iran's government, the governor of Kuwait did not allow Imam Khomeini's entrance to his country. We had already talked about Imam Khomeini's migration to Lebanon or Syria; however, after consulting with his children (Seyed Ahmad Khomeini), he decided to migrate to Paris. He arrived to Paris in the 14^th of Mehr, and two days later, he went to stay in one of the Iranian's house in Nofel Loshato (suburbs of Paris).
The officers of Elize Palace informed Imam Khomeini not to get involved in any political act. They brought this message from France prime minister to him. In a sharp reaction to their words, Imam Khomeini stipulated that these kinds of restrictions were against democracy claim and said if he was to go from this country to another one, he would never let off his objects. Imam Khomeini spent four months in Nofel Loshato which had become the most important news center of the world.
Imam Khomeini's different interviews and meetings with groups, reporters, the intellectuals, and the foreign students disclaimed his perspectives regarding the Islamic government and the future movement objects for people. Therefore, many people of the world got familiar to Imam Khomeini's thoughts and movement. From this small village (Nofel Loshato), Imam Khomeini led the most critical periods of movement in Iran.