This reform program came to a halt, however, in early June 1997 when war broke out. Denis Sassou-Nguesso, who returned to power when the war ended in October 1997, publicly expressed interest in moving forward on economic reforms and privatization and in renewing cooperation with international financial institutions. However, economic progress was badly hurt by slumping oil prices in 1998, which worsened the Republic of the Congo's budget deficit. A second blow was the resumption of armed conflict in December 1998.