New York-MJ Akbar,Union Minister of State for External Affairs has said that terrorism is the greatest challenge faced by the world as of now and it needs to be fought unitedly without a compromise.He was addressing a conference in New York ,Akbar said, though the world has suffered from isms before, but terrorism is the most dangerous ism of the 21st century. Mr. Akbar was in New York to attend the annual session of UN General Assembly.Indian Minister referred to the resolution passed by BRICS leaders in which they came down heavily on terrorism and for the first time named Lashkar-e-Taiba in their joint statement early this month at their summit in China.