NEW DELHI: The Centre has issued an advisory to all states to ensure law and order during Christmas in the wake of fringe elements recently threatening some Christian community members against celebrating the festival, home minister Rajnath Singh said on Saturday.A fringe group in Uttar Pradesh ’s Aligarh had on December 17 issued a circular and threatened the management of all city schools against celebrating Christmas saying, if they did so, it would be “at their own risk”.When asked about it, Singh said an advisory has been issued to all the states so that there is no law and order issue. He also conveyed his greetings to the nation on Christmas.“Any festival, whether it is Christmas, Ramzan, Holi or Diwali , should be celebrated without any problems. Strict action would be taken if anyone tries to create ruckus during the festivals,” the minister said on the sidelines of the 54th-anniversary parade of the Sashastra Seema Bal (SSB).He said India is the only country that believes in ‘Vasudhaiva Kutumbakam’ - a philosophy that inculcates an understanding that the whole world is one family.“I believe that all people irrespective of any religion should celebrate each other's festivals in its true spirit with full enthusiasm,” Singh said.