What is the main idea of the passage?

It has been an edgy summer in France. Since the horror of Bastille Day, when Mohamed killed 86 people in Nice, heavily armed soldiers have patrolled the beaches. In late July fanatical Muslims murdered a Catholic priest in Normandy. France remains in a state of emergency after gunmen affiliated to Islamic State (IS) killed 130 people in Paris last November. Next year’s presidential election threatens to be a competition over who can sound toughest on terrorism.
   Last week Nicolas Sarkozy, a former president, launched his campaign to get his old job back. As well as calling for a national ban on the "burkini" , a modest swimsuit favoured by Muslims, he has proposed the detention or electronic tagging of potentially thousands of people who are on a list of Islamist-inspired security threats. If he wins his party’s nomination, Mr. Sarkozy could be the less nativist of two second round candidates for the presidency. The other would be Marine Le Pen of the National Front.
   Germany, too, remains on high alert after two Islamist attacks and a shooting rampage by a mentally unstable teenager in July. It is boosting spending on its police and security forces. Eight state interior ministers from the ruling Christian Democrat party met on August 18th to back a raft of measures, including restricting dual citizenship for Germans of Turkish origin and banning the burqa. Some reports suggest that the government will soon advise citizens to stockpile food and water in case of a major terrorist attack.