Argentina filed a lawsuit against its neighbor Uruguay at the International Court of Justice at the Hague over the construction of two pulp mills along a border river...Argentina says Uruguay violated a treaty that regulates the two countries' use of the river by allowing construction of the mills without Argentina's approval...The $1.6 billion pulp mill projects [are being built] Metsae-Botnia Oy and Spain's Grupo Empresarial Ence...