Day of the Dragon
Shortly after the fall of the Kingdom of Stormwind, Lord Anduin Lothar – the last blood descendant of King Thoradin – led his people across the Great Sea to Lordaeron, where he went before King Terenas and warned of the coming of the Horde. Terenas immediately called a council of the neighboring kings which led to the formation of the Lordaeron Alliance. With Lothar named Supreme Commander, Terenas sent a missive to King Anasterian Sunstrider – himself a veteran of the Troll Wars a millennia before – informing him of Lothar's lineage and the request for aid to the Alliance. At first, Anasterian reluctantly sent a token display of support in the form of a party led by Sylvanas Windrunner. Not long afterwards, when Ogrim Doomhammer led the Horde's invasion of Quel'Thalas and began burning the edges of Eversong Woods, it was discovered that the Horde was being aided by the elves' mortal enemies, the Amani Trolls, led by the cunning Zul'jin. Sylvanas brought the head of a freshly slain troll warrior to the Convocation of Silvermoon, throwing it at Anasterian's feet. This provoked an intense rage within the King of Quel'Thalas, and he immediately called for the mobilization of his armies to battle the Horde. The effort was led by Sylvanas.
After the Second War ended, Anasterian withdrew his support from the Alliance. The official stance was that the humans' poor leadership resulted in the burning of Eversong Woods (even though Terenas reminded him of the many humans who gave their lives to protect Quel'Thalas); in addition, with Lothar dead and the Horde defeated, Anasterian believed that the debt to Thoradin and his descendants was repaid. With few exceptions – including the elven priests and sorceresses, as well as Anasterian's son and heir, Prince Kael’thas, a member of the Kirin Tor of Dalaran – the majority of the elven race shut themselves inside their enchanted kingdom.