4. What does the ‘unforeseen developments’ requirement in Article XIX of the GATT 1994 entail, and does this requirement still apply? In US – Steel Safeguards, had the US investigating authority provided a reasoned and adequate explanation for its finding that the Asian and Russian financial crises together with the strong United States dollar and economy were unforeseen developments that resulted in increased imports of the relevant products into the United States? Why is such an explanation important, according to the Appellate Body?