The report said the huge income is generated perhaps from shipping to drugs and extortion by a network of professional managers -both Tamils and others- across a string of countries and as a terrorist group its income is second only Jane's also said part of its income also comes from purported Tamil Charities, the funds of which are allegedly transferred for its coffers.

The report said the group has been engaged in a war with waning results since 2006 and its weapons have been smuggled in from South-East Asia and nearby parts of India .

The report said many Tamil charities have become an effective way of transferring money to the terrorist outfit.

The report also said a network of Tamil charities proved an effective way of moving money for the coffers of the outfit. It said the Sri Lankan government says large amounts of money raised after the 2004 tsunami found their way to the rebels. Australian federal government has prosecuted LTTE supporters against the same charge but the LTTE has denied the charge.

Jane's also said the Tamil Tigers freedom to operate overseas was reduced by a global crackdown on militant groups after 11 September 2001 attacks.