<span style="color: #222222;">Prime Minister's principal secretary Dr. P.K. Mishra has emphasized upon readiness to tackle challenges according to the needs of the 21st century.<br />''<br />''Addressing the International Conference on Disaster Resilient Infrastructure (ICDRI) in New Delhi, Dr. Mihsra said, the country cannot adopt old institutional approaches of 20th century to resolve current problems. He said, instead the Centre and states need an integrated and holistic approach like Pradhan Mantri Gati Shakti initiative which has brought all relevant concerned ministries and departments on the same platform.</span>