We are largely on the same side here. It is stronger than Kosovo, though Somaliland's unification with Italian Somaliland was legal as best I can tell. I have never seen any argument to convince me that the unification of the two territories in 1960 was NOT legal. As for the requirements of statehood, the four requirements commonly cited (which come from the Convention of Montevedeo) are government, permanent population, defined territory, and capacity to enter into relations with other states. On the fourth point, their claim is a little weak as their international relations aren't very broad - though it is admittedly expanding. The problem is that many legal scholars add a fifth requirement - the legality of the origin of the state, and this is where Somaliland runs into a problem as it is part of the internationally recognized borders of Somalia.