A second series of international sanctions were imposed against Yugoslavia in 1998 when violence in Kosovo intensified. On March 31, 1998, the UNSC passed Resolution 1160, placing an arms embargo on Yugoslavia. These measures were followed by the European Union banning of JAT Yugoslav Airlines from flying to EU member states and the freezing of Yugoslav government assets in EU member states. On March 24, 1999, NATO began bombing Yugoslavia, and the United States and European Union enacted further trade and financial aid bans, including a ban on exporting oil to Yugoslavia. The European Union ended its sanctions on Yugoslavia on October 9, 2000, allowing EU members to share commercial flights and trade oil with Yugoslavia.