Mezue ahịrịokwu na-esonụ: Na 14 Mee 1972 ITAK, All Ceylon Tamil Congress (ACTC), Ceylon Workers' Congress, Eelath Thamilar Otrumai Munnani na All Ceylon Tamil Conference guzobere Tamil United Front, emesịrị gbanwee aha ya Tamil United Liberation Front (TULF). Sampanthan bụ onye mmeri TULF na Trincomalee na ntuli aka omeiwu nke 1977. O meriri ntuliaka wee banye na nzuko omeiwu. Sampanthan na ndị otu TULF ndị ọzọ niile katọrọ nzuko omeiwu site na etiti afọ 1983 maka ọtụtụ ihe kpatara ya: ha nọ n'okpuru nrụgide nke ndị agha Sri Lankan Tamil ka ha ghara ịnọ na nzuko omeiwu karịa afọ isii ha na-adịkarị; Ndezigharị nke isii nke Iwu nke Sri Lanka chọrọ ka ha ṅụọ iyi na-enweghị nkwekọrịta na-enye nkwado maka steeti dị iche; na
Ọgba aghara Black July nke ndị Sinhalese gburu ndị Tamil ruru puku atọ. Mgbe ọnwa atọ gachara, Sampanthan tụfuru oche ya na nzuko omeiwu na 7 Septemba 1983. Sampanthan jere ozi dị ka onye na-ahụ maka ego, osote onye isi na odeakwụkwọ ukwu nke TULF.