The TULF clandestinely supported the armed actions of the young militants who were dubbed ""our boys"". TULF leader Appapillai Amirthalingam even provided letters of reference to the LTTE and to other Tamil insurgent groups to raise funds. Amirthalingam introduced Prabhakaran to N.S. Krishnan, who later became the first international representative of LTTE. It was Krishnan who introduced Prabhakaran to Anton Balasingham, who later became the chief political strategist and chief negotiator of LTTE. The "boys" were the product of the post-war population explosion. Many partially educated, unemployed Tamil youth fell for revolutionary solutions to their problems. The leftist parties had remained "non-communal" for a long time, but the Federal Party (as well as its offshoot, the TULF), deeply conservative and dominated by Vellalar casteism, did not attempt to form a national alliance with the leftists in their fight for language rights.