Only armaments were embargoed; American companies could sell oil and supplies to both sides. American trade laws include prohibitions on writers from embargoed countries. In 2000, all restrictions on key length were lifted, except for exports to embargoed countries. Australia ceased military cooperation with France and embargoed the export of uranium to France. In response on 1 August the US embargoed oil exports to Japan. Because the book was embargoed until publication day, there were no advance copies for reviewers. Due to political developments relating to Pakistan's nuclear program, these aircraft were embargoed before delivery. Some of the archive remains embargoed during the writing of Lessing's official biography. This brought about the intervention of the United States, which embargoed all petroleum to Japan. The price of silver rose and its export was embargoed. During World War I (1914-1918), countries such as Great Britain embargoed German goods, including toys. Due to Suharto's destruction of PKI, the Soviet Union embargoed military sales to Indonesia. The US also embargoed trade with the nascent state. The UN Security Council embargoed Liberian diamonds in Resolution 1343 in March 2001. In 1473 Duchess Yolande of Savoy embargoed Bern.